Counties in Idaho by natural change, July to June

Ada County had the highest natural change, July to June of 44 counties in 2018, at 1,658. Idaho County had the lowest, at -57. The median was 29 and the figure for Idaho was 7,405. Source: the U.S. Census Bureau.

Highest1,658Ada County

Lowest-57Idaho County

Median2944 counties

Idaho7,405History

Map of counties, 2018

Under -30
-30 to -20
-20 to 0
0 to 50
50 to 180
180 and over

persons, 2018. Red areas are below zero and blue areas above it. Source: 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. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2018

persons. Source: 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.

Full ranking

Rank	Counties	2018 persons	Change on 2017
1	Ada County Estimated	1,658	-12.6%
2	Canyon County Estimated	1,337	-13.1%
3	Madison County Estimated	941	-3.8%
4	Bonneville County Estimated	893	-9.3%
5	Twin Falls County Estimated	405	-23.4%
6	Bannock County Estimated	328	-33.5%
7	Jefferson County Estimated	304	+1.3%
8	Elmore County Estimated	236	-9.6%
9	Kootenai County Estimated	219	-45.1%
10	Jerome County Estimated	202	-2.4%
11	Cassia County Estimated	169	-12.4%
12	Bingham County Estimated	168	-28.2%
13	Latah County Estimated	163	-33.7%
14	Minidoka County Estimated	120	-12.4%
15	Teton County Estimated	90	-14.3%
16	Blaine County Estimated	83	+2.5%
17	Franklin County Estimated	76	+7%
18	Fremont County Estimated	73	0%
19	Payette County Estimated	63	-35.7%
20	Gooding County Estimated	60	+36.4%
21	Power County Estimated	35	-61.1%
22	Boundary County Estimated	29	+26.1%
22	Caribou County Estimated	29	+480%
24	Valley County Estimated	28	+300%
25	Lincoln County Estimated	23	-47.7%
26	Owyhee County Estimated	22	-60.7%
27	Clark County Estimated	8	+366.7%
28	Bear Lake County Estimated	6	-73.9%
29	Boise County Estimated	2	+122.2%
29	Nez Perce County Estimated	2	+101.8%
31	Oneida County Estimated	-3	-114.3%
32	Camas County Estimated	-8	-900%
33	Butte County Estimated	-9	-80%
34	Adams County Estimated	-16	-77.8%
35	Lewis County Estimated	-18	-125%
36	Shoshone County Estimated	-22	+67.2%
37	Custer County Estimated	-23	-2,200%
38	Lemhi County Estimated	-25	-4.2%
39	Gem County Estimated	-26	+10.3%
40	Clearwater County Estimated	-34	+45.2%
41	Benewah County Estimated	-36	+12.2%
42	Washington County Estimated	-43	-637.5%
43	Bonner County Estimated	-47	-413.3%
44	Idaho County Estimated	-57	-338.5%

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

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: 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 Idaho by natural change, July to June, 2018) [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 Idaho by natural change, July to June, 2018. 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/idaho-counties?period=2018. 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 Idaho by natural change, July to June, 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/natural-change-july-june/idaho-counties?period=2018.

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 Idaho by natural change, July to June, 2018 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/natural-change-july-june/idaho-counties?period=2018 (Accessed: 12 October 2026).

BibTeX

@misc{census_counties_in_idaho_by_2018,
  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 Idaho by natural change, July to June, 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/natural-change-july-june/idaho-counties?period=2018. 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 Idaho by natural change, July to June, 2018
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/idaho-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/natural-change-july-june/idaho-counties?period=2018.
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  -

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Questions

Which county has the highest natural change, July to June?

Ada County, with 1,658 in 2018, according to the U.S. Census Bureau.

Which county has the lowest natural change, July to June?

Idaho County, with -57 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: 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.