Counties in Illinois by natural change, July to June
Cook County had the highest natural change, July to June of 102 counties in 2017, at 24,179. Macoupin County had the lowest, at -131. The median was -16 and the figure for Illinois was 42,586. Source: the U.S. Census Bureau.
Top 40 counties, 2017
Full ranking
| Rank | Counties | 2017 | Change on 2016 |
|---|---|---|---|
| 1 | Cook County Estimated | 24,179 | -12.5% |
| 2 | DuPage County Estimated | 4,248 | -8.6% |
| 3 | Kane County Estimated | 3,313 | -7.7% |
| 4 | Lake County Estimated | 2,819 | -14.3% |
| 5 | Will County Estimated | 2,767 | -22.8% |
| 6 | McHenry County Estimated | 1,033 | -6.3% |
| 7 | Champaign County Estimated | 969 | -11.3% |
| 8 | Kendall County Estimated | 942 | -9.9% |
| 9 | McLean County Estimated | 833 | -10.5% |
| 10 | Peoria County Estimated | 665 | -11% |
| 11 | Winnebago County Estimated | 603 | -27.8% |
| 12 | St. Clair County Estimated | 585 | -32.4% |
| 13 | DeKalb County Estimated | 351 | -25.9% |
| 14 | Sangamon County Estimated | 305 | -4.1% |
| 15 | Jackson County Estimated | 205 | -18.3% |
| 16 | Boone County Estimated | 172 | -4.4% |
| 17 | Grundy County Estimated | 163 | -29.4% |
| 18 | Rock Island County Estimated | 145 | -50.5% |
| 19 | Kankakee County Estimated | 144 | -4% |
| 20 | Effingham County Estimated | 141 | +36.9% |
| 21 | Madison County Estimated | 125 | -42.1% |
| 22 | Macon County Estimated | 81 | -2.4% |
| 23 | Clinton County Estimated | 61 | -40.2% |
| 24 | Adams County Estimated | 50 | +47.1% |
| 25 | Cass County Estimated | 40 | +400% |
| 25 | Warren County Estimated | 40 | -11.1% |
| 27 | Shelby County Estimated | 38 | +192.3% |
| 28 | Monroe County Estimated | 37 | -69.4% |
| 29 | Jefferson County Estimated | 36 | -58.6% |
| 30 | Douglas County Estimated | 31 | -69.9% |
| 31 | Coles County Estimated | 30 | +1,100% |
| 32 | Fayette County Estimated | 23 | +187.5% |
| 33 | Cumberland County Estimated | 22 | 0% |
| 34 | Moultrie County Estimated | 17 | +666.7% |
| 35 | Clark County Estimated | 14 | +146.7% |
| 36 | Ogle County Estimated | 12 | -80% |
| 37 | Pulaski County Estimated | 10 | +143.5% |
| 38 | Piatt County Estimated | 8 | +14.3% |
| 39 | Washington County Estimated | 7 | +800% |
| 40 | Menard County Estimated | 1 | -94.7% |
| 41 | Vermilion County Estimated | -2 | -104.4% |
| 42 | Jasper County Estimated | -3 | +70% |
| 42 | Wabash County Estimated | -3 | -121.4% |
| 44 | Tazewell County Estimated | -4 | -102.4% |
| 45 | Alexander County Estimated | -5 | +84.4% |
| 46 | Brown County Estimated | -10 | -158.8% |
| 47 | Crawford County Estimated | -11 | +47.6% |
| 48 | Richland County Estimated | -13 | +59.4% |
| 48 | Stark County Estimated | -13 | +23.5% |
| 50 | Scott County Estimated | -14 | |
| 51 | Hamilton County Estimated | -15 | -200% |
| 52 | Woodford County Estimated | -16 | -125.8% |
| 53 | Calhoun County Estimated | -17 | -342.9% |
| 54 | Henderson County Estimated | -18 | +18.2% |
| 54 | Putnam County Estimated | -18 | +10% |
| 56 | McDonough County Estimated | -20 | +60.8% |
| 56 | Randolph County Estimated | -20 | +63% |
| 58 | Bond County Estimated | -22 | +42.1% |
| 58 | Edwards County Estimated | -22 | -222.2% |
| 60 | Johnson County Estimated | -25 | -108.3% |
| 60 | Pope County Estimated | -25 | +21.9% |
| 60 | Wayne County Estimated | -25 | -143.9% |
| 63 | Clay County Estimated | -27 | -12.5% |
| 63 | Perry County Estimated | -27 | -440% |
| 65 | Morgan County Estimated | -28 | +39.1% |
| 66 | Lee County Estimated | -29 | -52.6% |
| 67 | Gallatin County Estimated | -30 | -900% |
| 67 | Pike County Estimated | -30 | -233.3% |
| 69 | Livingston County Estimated | -31 | -342.9% |
| 70 | Mercer County Estimated | -35 | +36.4% |
| 71 | Lawrence County Estimated | -37 | +56% |
| 72 | De Witt County Estimated | -41 | |
| 73 | Mason County Estimated | -42 | +32.3% |
| 74 | Hancock County Estimated | -46 | -557.1% |
| 75 | Franklin County Estimated | -47 | -11.9% |
| 76 | Whiteside County Estimated | -49 | -53.1% |
| 76 | Williamson County Estimated | -49 | -173.1% |
| 78 | Hardin County Estimated | -50 | -127.3% |
| 79 | Greene County Estimated | -51 | +17.7% |
| 79 | Logan County Estimated | -51 | -10.9% |
| 79 | Montgomery County Estimated | -51 | +27.1% |
| 82 | Henry County Estimated | -52 | -316.7% |
| 83 | Edgar County Estimated | -54 | +28% |
| 84 | Ford County Estimated | -55 | -14.6% |
| 85 | Iroquois County Estimated | -59 | +43.3% |
| 85 | Marshall County Estimated | -59 | -110.7% |
| 87 | Schuyler County Estimated | -61 | -110.3% |
| 88 | Union County Estimated | -62 | -2,166.7% |
| 89 | Carroll County Estimated | -64 | -137% |
| 90 | Massac County Estimated | -65 | -75.7% |
| 91 | Marion County Estimated | -67 | -76.3% |
| 92 | LaSalle County Estimated | -74 | +1.3% |
| 93 | Knox County Estimated | -75 | +45.3% |
| 94 | Stephenson County Estimated | -78 | -69.6% |
| 95 | Jersey County Estimated | -79 | -295% |
| 96 | Bureau County Estimated | -85 | -57.4% |
| 97 | White County Estimated | -86 | -45.8% |
| 98 | Saline County Estimated | -92 | -84% |
| 99 | Christian County Estimated | -93 | -34.8% |
| 100 | Jo Daviess County Estimated | -102 | -72.9% |
| 101 | Fulton County Estimated | -114 | +5.8% |
| 102 | Macoupin County Estimated | -131 | -22.4% |
Other periods
About this ranking
Estimated births minus deaths of residents from July 1 of the previous year through June 30 of the reported year. A negative value means more deaths than births.
Equals births_july_june minus deaths_july_june for the same place and year. Not a calendar-year figure.
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: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.Citation styles
APA 7
U.S. Census Bureau. (2026). Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021 (Counties in Illinois by natural change, July to June, 2017) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html
MLA 9
Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021, Counties in Illinois by natural change, July to June, 2017. U.S. Census Bureau, 26 Mar. 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/natural-change-july-june/illinois-counties?period=2017. Accessed 12 Oct. 2026.
Chicago (author-date)
U.S. Census Bureau. 2026. Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. Counties in Illinois by natural change, July to June, 2017. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/natural-change-july-june/illinois-counties?period=2017.
Harvard
U.S. Census Bureau (2026) Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021, Counties in Illinois by natural change, July to June, 2017 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/natural-change-july-june/illinois-counties?period=2017 (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_illinois_by_2017,
author = {{U.S. Census Bureau}},
title = {{Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021: Counties in Illinois by natural change, July to June, 2017}},
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/natural-change-july-june/illinois-counties?period=2017. Publisher attribution: U.S. Census Bureau. Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. 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: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021: Counties in Illinois by natural change, July to June, 2017
PY - 2026
DA - 2026/03/26
PB - U.S. Census Bureau
DB - Invokely
UR - https://www.census.gov/programs-surveys/popest/data/data-sets.html
L2 - https://invokely.ai/rankings/natural-change-july-june/illinois-counties?period=2017
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/natural-change-july-june/illinois-counties?period=2017.
N1 - Publisher attribution: U.S. Census Bureau. Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.
ER -
Use this data in your AI agent
Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:
Rank Counties in Illinois by natural change, July to June using official data, and cite the source.
rank_places {"indicator":"natural_change_july_june","level":"province","within":"Illinois","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=natural_change_july_june&level=province&within=Illinois&limit=10Questions
Which county has the highest natural change, July to June?
Cook County, with 24,179 in 2017, according to the U.S. Census Bureau.
Which county has the lowest natural change, July to June?
Macoupin County, with -131 in 2017.
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: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. Retrieved 2026-10-12.