Data / Rankings / Population under 18 / Counties in Texas

Counties in Texas by population under 18

Gaines County had the highest population under 18 of 254 counties in 2018, at 34.2%. Jeff Davis County had the lowest, at 13.2%. The median was 23.8% and the figure for Texas was 25.5%. Source: the U.S. Census Bureau.

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Highest34.2Gaines County
Lowest13.2Jeff Davis County
Median23.8254 counties
Texas25.5History

Map of counties, 2018

Anderson County: 18.4 %Andrews County: 30.4 %Angelina County: 24.9 %Aransas County: 16.8 %Archer County: 22.9 %Armstrong County: 24 %Atascosa County: 26.9 %Austin County: 23.4 %Bailey County: 31.1 %Bandera County: 17 %Bastrop County: 25 %Baylor County: 23.3 %Bee County: 19.9 %Bell County: 26.9 %Bexar County: 25.3 %Blanco County: 17.8 %Borden County: 24 %Bosque County: 21.4 %Bowie County: 23.1 %Brazoria County: 26.3 %Brazos County: 20.7 %Brewster County: 18.7 %Briscoe County: 19.4 %Brooks County: 26.1 %Brown County: 22.1 %Burleson County: 21.6 %Burnet County: 21.1 %Caldwell County: 25.9 %Calhoun County: 23.5 %Callahan County: 22.8 %Cameron County: 29.5 %Camp County: 25.7 %Carson County: 25.1 %Cass County: 22.1 %Castro County: 28.4 %Chambers County: 27.8 %Cherokee County: 25.1 %Childress County: 21.2 %Clay County: 20.8 %Cochran County: 28.2 %Coke County: 20.1 %Coleman County: 20.2 %Collin County: 26.6 %Collingsworth County: 24.9 %Colorado County: 21.6 %Comal County: 22 %Comanche County: 22.1 %Concho County: 14.9 %Cooke County: 24.5 %Coryell County: 24.5 %Cottle County: 22.3 %Crane County: 29 %Crockett County: 23.4 %Crosby County: 26.6 %Culberson County: 22.2 %Dallam County: 29.6 %Dallas County: 25.3 %Dawson County: 24.4 %Deaf Smith County: 30.7 %Delta County: 22 %Denton County: 25.8 %DeWitt County: 22.2 %Dickens County: 22.4 %Dimmit County: 27.7 %Donley County: 19.7 %Duval County: 23.3 %Eastland County: 21.2 %Ector County: 27.9 %Edwards County: 22.5 %Ellis County: 26.9 %El Paso County: 26.2 %Erath County: 20.5 %Falls County: 20.3 %Fannin County: 21.3 %Fayette County: 20.5 %Fisher County: 22.1 %Floyd County: 27.6 %Foard County: 18.6 %Fort Bend County: 27.8 %Franklin County: 23 %Freestone County: 21.8 %Frio County: 25.1 %Gaines County: 34.2 %Galveston County: 24.1 %Garza County: 18.2 %Gillespie County: 18.5 %Glasscock County: 24.1 %Goliad County: 22.5 %Gonzales County: 25.7 %Gray County: 24.8 %Grayson County: 23.4 %Gregg County: 24.7 %Grimes County: 21.7 %Guadalupe County: 26.1 %Hale County: 26.3 %Hall County: 22.5 %Hamilton County: 21.4 %Hansford County: 28.8 %Hardeman County: 22.7 %Hardin County: 24.4 %Harris County: 26.1 %Harrison County: 25.1 %Hartley County: 21.3 %Haskell County: 21 %Hays County: 23.4 %Hemphill County: 29.1 %Henderson County: 21.2 %Hidalgo County: 31.2 %Hill County: 23.7 %Hockley County: 26.1 %Hood County: 20.5 %Hopkins County: 24.5 %Houston County: 19.1 %Howard County: 22.8 %Hudspeth County: 18.6 %Hunt County: 23.9 %Hutchinson County: 25.6 %Irion County: 21.5 %Jack County: 21.7 %Jackson County: 24.5 %Jasper County: 23.4 %Jeff Davis County: 13.2 %Jefferson County: 23.7 %Jim Hogg County: 27.9 %Jim Wells County: 27.1 %Johnson County: 25.7 %Jones County: 17.1 %Karnes County: 19.5 %Kaufman County: 28.2 %Kendall County: 22.8 %Kenedy County: 25.8 %Kent County: 18.3 %Kerr County: 18.3 %Kimble County: 16.8 %King County: 28.7 %Kinney County: 17.3 %Kleberg County: 23.6 %Knox County: 24.5 %Lamar County: 23.4 %Lamb County: 27.5 %Lampasas County: 22.5 %La Salle County: 20.9 %Lavaca County: 23.1 %Lee County: 24.4 %Leon County: 21.1 %Liberty County: 25.5 %Limestone County: 22.8 %Lipscomb County: 25 %Live Oak County: 18 %Llano County: 15.3 %Loving County: 28.3 %Lubbock County: 23.8 %Lynn County: 27.8 %McCulloch County: 22.1 %McLennan County: 24.6 %McMullen County: 19.8 %Madison County: 20.7 %Marion County: 17.5 %Martin County: 28.8 %Mason County: 19.2 %Matagorda County: 25 %Maverick County: 30 %Medina County: 23.4 %Menard County: 18.1 %Midland County: 27.6 %Milam County: 24.3 %Mills County: 20.4 %Mitchell County: 19.4 %Montague County: 22.3 %Montgomery County: 26.5 %Moore County: 30.2 %Morris County: 22.4 %Motley County: 19.8 %Nacogdoches County: 22.7 %Navarro County: 25.6 %Newton County: 21.5 %Nolan County: 25.4 %Nueces County: 24.1 %Ochiltree County: 30.8 %Oldham County: 29.8 %Orange County: 24.1 %Palo Pinto County: 22.6 %Panola County: 23.5 %Parker County: 24.9 %Parmer County: 29.4 %Pecos County: 24.2 %Polk County: 19.2 %Potter County: 26 %Presidio County: 24.7 %Rains County: 20.7 %Randall County: 24 %Reagan County: 28.4 %Real County: 16.8 %Red River County: 20.5 %Reeves County: 21.8 %Refugio County: 22.6 %Roberts County: 25.7 %Robertson County: 24.3 %Rockwall County: 27.4 %Runnels County: 22.4 %Rusk County: 22.3 %Sabine County: 19.2 %San Augustine County: 20.1 %San Jacinto County: 21.9 %San Patricio County: 25.8 %San Saba County: 19.6 %Schleicher County: 26 %Scurry County: 25.2 %Shackelford County: 23.4 %Shelby County: 25.2 %Sherman County: 29.5 %Smith County: 24.3 %Somervell County: 24.1 %Starr County: 30.9 %Stephens County: 21.8 %Sterling County: 26.4 %Stonewall County: 19.3 %Sutton County: 24.5 %Swisher County: 24.9 %Tarrant County: 26 %Taylor County: 24.2 %Terrell County: 21.9 %Terry County: 27.5 %Throckmorton County: 20.6 %Titus County: 27.8 %Tom Green County: 23.6 %Travis County: 21.9 %Trinity County: 19.6 %Tyler County: 19.2 %Upshur County: 24.5 %Upton County: 27.9 %Uvalde County: 25.6 %Val Verde County: 27 %Van Zandt County: 22.9 %Victoria County: 24.9 %Walker County: 15 %Waller County: 23.9 %Ward County: 26.9 %Washington County: 20.9 %Webb County: 31.4 %Wharton County: 24.9 %Wheeler County: 24 %Wichita County: 22.1 %Wilbarger County: 23.1 %Willacy County: 23.7 %Williamson County: 26.2 %Wilson County: 24.5 %Winkler County: 28.7 %Wise County: 24.7 %Wood County: 18.9 %Yoakum County: 29.1 %Young County: 24 %Zapata County: 31.5 %Zavala County: 29.1 %
  • Under 20
  • 20 to 22
  • 22 to 24
  • 24 to 25
  • 25 to 27
  • 27 and over
%, 2018. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2018

Gaines County: 34.2 %Gaines County34.2Zapata County: 31.5 %Zapata County31.5Webb County: 31.4 %Webb County31.4Hidalgo County: 31.2 %Hidalgo County31.2Bailey County: 31.1 %Bailey County31.1Starr County: 30.9 %Starr County30.9Ochiltree County: 30.8 %Ochiltree County30.8Deaf Smith County: 30.7 %Deaf Smith County30.7Andrews County: 30.4 %Andrews County30.4Moore County: 30.2 %Moore County30.2Maverick County: 30 %Maverick County30Oldham County: 29.8 %Oldham County29.8Dallam County: 29.6 %Dallam County29.6Sherman County: 29.5 %Sherman County29.5Cameron County: 29.5 %Cameron County29.5Parmer County: 29.4 %Parmer County29.4Yoakum County: 29.1 %Yoakum County29.1Hemphill County: 29.1 %Hemphill County29.1Zavala County: 29.1 %Zavala County29.1Crane County: 29 %Crane County29Martin County: 28.8 %Martin County28.8Hansford County: 28.8 %Hansford County28.8King County: 28.7 %King County28.7Winkler County: 28.7 %Winkler County28.7Castro County: 28.4 %Castro County28.4Reagan County: 28.4 %Reagan County28.4Loving County: 28.3 %Loving County28.3Kaufman County: 28.2 %Kaufman County28.2Cochran County: 28.2 %Cochran County28.2Jim Hogg County: 27.9 %Jim Hogg County27.9Upton County: 27.9 %Upton County27.9Ector County: 27.9 %Ector County27.9Fort Bend County: 27.8 %Fort Bend County27.8Lynn County: 27.8 %Lynn County27.8Titus County: 27.8 %Titus County27.8Chambers County: 27.8 %Chambers County27.8Dimmit County: 27.7 %Dimmit County27.7Floyd County: 27.6 %Floyd County27.6Midland County: 27.6 %Midland County27.6Terry County: 27.5 %Terry County27.5Gaines County: 34.2 %Gaines County34.2Zapata County: 31.5 %Zapata County31.5Webb County: 31.4 %Webb County31.4Hidalgo County: 31.2 %Hidalgo County31.2Bailey County: 31.1 %Bailey County31.1Starr County: 30.9 %Starr County30.9Ochiltree County: 30.8 %Ochiltree County30.8Deaf Smith County: 30.7 %Deaf Smith County30.7Andrews County: 30.4 %Andrews County30.4Moore County: 30.2 %Moore County30.2Maverick County: 30 %Maverick County30Oldham County: 29.8 %Oldham County29.8Dallam County: 29.6 %Dallam County29.6Sherman County: 29.5 %Sherman County29.5Cameron County: 29.5 %Cameron County29.5Parmer County: 29.4 %Parmer County29.4Yoakum County: 29.1 %Yoakum County29.1Hemphill County: 29.1 %Hemphill County29.1Zavala County: 29.1 %Zavala County29.1Crane County: 29 %Crane County29Martin County: 28.8 %Martin County28.8Hansford County: 28.8 %Hansford County28.8King County: 28.7 %King County28.7Winkler County: 28.7 %Winkler County28.7Castro County: 28.4 %Castro County28.4Reagan County: 28.4 %Reagan County28.4Loving County: 28.3 %Loving County28.3Kaufman County: 28.2 %Kaufman County28.2Cochran County: 28.2 %Cochran County28.2Jim Hogg County: 27.9 %Jim Hogg County27.9Upton County: 27.9 %Upton County27.9Ector County: 27.9 %Ector County27.9Fort Bend County: 27.8 %Fort Bend County27.8Lynn County: 27.8 %Lynn County27.8Titus County: 27.8 %Titus County27.8Chambers County: 27.8 %Chambers County27.8Dimmit County: 27.7 %Dimmit County27.7Floyd County: 27.6 %Floyd County27.6Midland County: 27.6 %Midland County27.6Terry County: 27.5 %Terry County27.5
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2018 (%)Change on 2017
1Gaines County34.2-0.3 pts
2Zapata County31.5-0.5 pts
3Webb County31.4-0.7 pts
4Hidalgo County31.2-0.6 pts
5Bailey County31.1-0.3 pts
6Starr County30.9-0.4 pts
7Ochiltree County30.8-0.2 pts
8Deaf Smith County30.7-0.4 pts
9Andrews County30.4+0.2 pts
10Moore County30.2-0.5 pts
11Maverick County30-0.5 pts
12Oldham County29.8-0.3 pts
13Dallam County29.6-0.5 pts
14Sherman County29.5+0.1 pts
15Cameron County29.5-0.6 pts
16Parmer County29.4-0.2 pts
17Yoakum County29.1-0.7 pts
18Hemphill County29.1-2.1 pts
19Zavala County29.1-0.1 pts
20Crane County29-0.5 pts
21Martin County28.8-0.1 pts
22Hansford County28.8-0.4 pts
23King County28.7-1.1 pts
24Winkler County28.7-0.2 pts
25Castro County28.4-0.3 pts
26Reagan County28.4-1 pts
27Loving County28.3-6.2 pts
28Kaufman County28.2+0.1 pts
29Cochran County28.2-0.4 pts
30Jim Hogg County27.9-0.4 pts
31Upton County27.9-0.3 pts
32Ector County27.9-0 pts
33Fort Bend County27.8-0.2 pts
33Lynn County27.8+0.2 pts
35Titus County27.8-0.3 pts
36Chambers County27.8-0.1 pts
37Dimmit County27.7-0.6 pts
38Floyd County27.6+0.2 pts
39Midland County27.6+0.2 pts
40Terry County27.5-0.3 pts
41Lamb County27.5-0.1 pts
42Rockwall County27.4-0.2 pts
43Jim Wells County27.1-0.4 pts
44Val Verde County27-0.4 pts
45Bell County26.9-0.2 pts
46Atascosa County26.9-0.1 pts
47Ellis County26.9-0.2 pts
48Ward County26.90 pts
49Crosby County26.6-0.4 pts
50Collin County26.6-0.3 pts
51Montgomery County26.5-0.2 pts
52Sterling County26.4-0.5 pts
53Hale County26.3-0.5 pts
54Brazoria County26.3-0.2 pts
55El Paso County26.2-0.5 pts
56Williamson County26.2-0.4 pts
57Harris County26.1-0.3 pts
58Brooks County26.10 pts
59Guadalupe County26.1-0.3 pts
59Hockley County26.1-0.2 pts
61Schleicher County26-1.3 pts
62Tarrant County26-0.3 pts
63Potter County26-0.3 pts
64Caldwell County25.9+0.1 pts
65San Patricio County25.8-0.3 pts
66Kenedy County25.8-1.6 pts
67Denton County25.8-0.4 pts
68Johnson County25.7-0 pts
69Camp County25.7-0.1 pts
70Gonzales County25.7-0.3 pts
71Roberts County25.7-0.9 pts
72Hutchinson County25.6-0.1 pts
73Navarro County25.6+0.1 pts
74Uvalde County25.6-0.6 pts
75Liberty County25.5+0.6 pts
76Nolan County25.40 pts
77Dallas County25.3-0.4 pts
78Bexar County25.3-0.3 pts
79Shelby County25.2-0.3 pts
80Scurry County25.2-0.2 pts
81Carson County25.1+0.1 pts
82Cherokee County25.1-0.2 pts
83Frio County25.1-0.2 pts
84Harrison County25.1-0.2 pts
85Matagorda County25-0.1 pts
86Lipscomb County25-0.6 pts
87Bastrop County25-0.1 pts
88Wharton County24.9-0.4 pts
89Swisher County24.9-0.3 pts
90Angelina County24.9-0.4 pts
91Collingsworth County24.9-0.6 pts
92Parker County24.90 pts
93Victoria County24.9-0.4 pts
94Gray County24.8-0.4 pts
95Gregg County24.7-0.1 pts
96Presidio County24.7-0.9 pts
97Wise County24.7-0.2 pts
98McLennan County24.6-0 pts
99Hopkins County24.5-0.3 pts
100Sutton County24.5-0.3 pts
101Upshur County24.5-0.2 pts
102Jackson County24.5-0 pts
103Knox County24.5-1.1 pts
104Coryell County24.5-0.2 pts
105Wilson County24.5-0.3 pts
106Cooke County24.5-0 pts
107Dawson County24.4-0.5 pts
108Hardin County24.4-0.2 pts
109Lee County24.4+0.2 pts
110Milam County24.3-0.2 pts
111Robertson County24.3-0.4 pts
112Smith County24.3-0.2 pts
113Taylor County24.2-0 pts
114Pecos County24.2+0.2 pts
115Somervell County24.1-0.2 pts
116Galveston County24.1-0.3 pts
117Nueces County24.1-0.3 pts
118Glasscock County24.1+1.1 pts
119Orange County24.1-0.2 pts
120Young County24-0.1 pts
121Randall County24-0.1 pts
122Borden County24+0.2 pts
123Wheeler County24-1.1 pts
124Armstrong County24+1 pts
125Hunt County23.9-0 pts
126Waller County23.9-0.1 pts
127Lubbock County23.8-0.2 pts
128Hill County23.70 pts
129Jefferson County23.7+0.1 pts
130Willacy County23.7-0.2 pts
131Tom Green County23.6+0.1 pts
132Kleberg County23.6-0.1 pts
133Calhoun County23.5-0.6 pts
134Panola County23.5-0.2 pts
135Grayson County23.4-0.1 pts
136Medina County23.4-0.2 pts
137Shackelford County23.4-0.7 pts
138Austin County23.4-0.4 pts
139Lamar County23.4-0.1 pts
140Jasper County23.4-0.1 pts
141Crockett County23.4-0.8 pts
142Hays County23.4-0.1 pts
143Duval County23.3-0.6 pts
144Baylor County23.3+0.9 pts
145Bowie County23.1-0.1 pts
146Lavaca County23.1-0.1 pts
147Wilbarger County23.1-0.1 pts
148Franklin County23-0.5 pts
149Van Zandt County22.9-0.2 pts
150Archer County22.9+0.2 pts
151Kendall County22.8-0.5 pts
152Howard County22.80 pts
153Callahan County22.8-0.4 pts
154Limestone County22.8-0.3 pts
155Hardeman County22.7-0.4 pts
156Nacogdoches County22.7-0.2 pts
157Refugio County22.6-0.5 pts
158Palo Pinto County22.6-0.4 pts
159Goliad County22.5+0.1 pts
160Edwards County22.5+1.2 pts
161Hall County22.5-0.4 pts
162Lampasas County22.5-0.6 pts
163Runnels County22.4-0.5 pts
164Morris County22.4-0.2 pts
165Dickens County22.4+0.7 pts
166Cottle County22.3+0.5 pts
167Montague County22.3-0.3 pts
168Rusk County22.3-0.2 pts
169DeWitt County22.2-0 pts
170Culberson County22.2-2.2 pts
171Brown County22.1-0.5 pts
172Wichita County22.1-0.1 pts
173Comanche County22.1-0.2 pts
174McCulloch County22.10 pts
175Cass County22.10 pts
176Fisher County22.1+0.5 pts
177Comal County22-0.1 pts
178Delta County22-0.3 pts
179San Jacinto County21.9-0.2 pts
180Travis County21.9-0.4 pts
181Terrell County21.9-0.3 pts
182Freestone County21.8-0.2 pts
183Reeves County21.8+0.2 pts
184Stephens County21.8+0.1 pts
185Jack County21.7-0.1 pts
186Grimes County21.7-0.4 pts
187Colorado County21.6-0.5 pts
188Burleson County21.6-0.4 pts
189Newton County21.5+0.1 pts
190Irion County21.5-0.5 pts
191Hamilton County21.4+0.2 pts
192Bosque County21.4+0.2 pts
193Hartley County21.3-0.2 pts
194Fannin County21.3+0.1 pts
195Childress County21.20 pts
196Eastland County21.2-0.2 pts
197Henderson County21.20 pts
198Leon County21.1-0.5 pts
199Burnet County21.1-0.3 pts
200Haskell County21+0.3 pts
201La Salle County20.9-0.3 pts
202Washington County20.9-0.3 pts
203Clay County20.8-0.3 pts
204Madison County20.70 pts
205Brazos County20.7+0.1 pts
206Rains County20.7+0.8 pts
207Throckmorton County20.6-0.9 pts
208Red River County20.5+0.3 pts
209Hood County20.5-0 pts
210Erath County20.5-0.1 pts
211Fayette County20.5-0 pts
212Mills County20.4-0.7 pts
213Falls County20.3-0.7 pts
214Coleman County20.2-0.2 pts
215San Augustine County20.1-0 pts
216Coke County20.1-0.2 pts
217Bee County19.9-0.4 pts
218Motley County19.8+1 pts
219McMullen County19.8+0.3 pts
220Donley County19.7-0.1 pts
221San Saba County19.6+0.2 pts
222Trinity County19.6-0.3 pts
223Karnes County19.5+0.2 pts
224Mitchell County19.4-1 pts
225Briscoe County19.4-0.7 pts
226Stonewall County19.3-0.8 pts
227Sabine County19.2-0.1 pts
228Tyler County19.20 pts
229Mason County19.2-0.4 pts
230Polk County19.2-0.4 pts
231Houston County19.1-0.1 pts
232Wood County18.9-0.1 pts
233Brewster County18.7-0.4 pts
234Hudspeth County18.6-1.1 pts
235Foard County18.6-0.8 pts
236Gillespie County18.5-0.3 pts
237Anderson County18.4-0.2 pts
238Kerr County18.3-0.2 pts
239Kent County18.3+0.1 pts
240Garza County18.2+0.2 pts
241Menard County18.1+0.4 pts
242Live Oak County18-0.5 pts
243Blanco County17.8-0.7 pts
244Marion County17.5-0.4 pts
245Kinney County17.3-0.8 pts
246Jones County17.1-0.4 pts
247Bandera County17-0.1 pts
248Aransas County16.8-0.9 pts
248Real County16.8-0.4 pts
250Kimble County16.8-1 pts

Showing the top 250 of 254. The Excel download has every row.

Other periods

About this ranking

Residents aged 0 to 17 as a percentage of total population on 1 July. United States: Census Bureau county population estimates by age; states and the nation are sums of their counties.

Uses the US age of majority. Not comparable with population_0_14_share, which stops at 14.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties (Counties in Texas by population under 18, 2018) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html

MLA 9

Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties, Counties in Texas by population under 18, 2018. U.S. Census Bureau, 25 June 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/population-under-18/texas-counties?period=2018. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. Counties in Texas by population under 18, 2018. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/population-under-18/texas-counties?period=2018.

Harvard

U.S. Census Bureau (2026) Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties, Counties in Texas by population under 18, 2018 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/population-under-18/texas-counties?period=2018 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_texas_by_2018,
  author = {{U.S. Census Bureau}},
  title = {{Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties: Counties in Texas by population under 18, 2018}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.census.gov/programs-surveys/popest/data/data-sets.html},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/population-under-18/texas-counties?period=2018. Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties: Counties in Texas by population under 18, 2018
PY  - 2026
DA  - 2026/06/25
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www.census.gov/programs-surveys/popest/data/data-sets.html
L2  - https://invokely.ai/rankings/population-under-18/texas-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/population-under-18/texas-counties?period=2018.
N1  - Publisher attribution: U.S. Census Bureau. Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
ER  -
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Rank Counties in Texas by population under 18 using official data, and cite the source.
rank_places {"indicator":"population_0_17_share","level":"province","within":"Texas","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population_0_17_share&level=province&within=Texas&limit=10

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Questions

Which county has the highest population under 18?

Gaines County, with 34.2% in 2018, according to the U.S. Census Bureau.

Which county has the lowest population under 18?

Jeff Davis County, with 13.2% in 2018.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program, county population by age and sex: residents aged 0 to 17 as a percentage of the total on 1 July, 2010 to 2019 from the 2010 to 2020 intercensal file and 2020 onwards from the latest vintage; states and the nation summed from counties. Retrieved 2026-10-12.

Population under 18: other rankings

Counties in Texas: more rankings