Counties in Washington by natural change, July to June

King County had the highest natural change, July to June of 39 counties in 2018, at 11,733. Clallam County had the lowest, at -392. The median was 42 and the figure for Washington was 29,914. Source: the U.S. Census Bureau.

Highest11,733King County

Lowest-392Clallam County

Median4239 counties

Washington29,914History

Map of counties, 2018

Under -100
-100 to 0
0 to 100
100 to 800
800 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	King County Estimated	11,733	-6.8%
2	Pierce County Estimated	4,515	-1.5%
3	Snohomish County Estimated	4,218	-2.2%
4	Clark County Estimated	1,946	-8.9%
5	Yakima County Estimated	1,667	-2.8%
6	Franklin County Estimated	1,182	-3.3%
7	Benton County Estimated	1,031	-17.1%
8	Spokane County Estimated	979	-38%
9	Grant County Estimated	735	-1.1%
10	Thurston County Estimated	731	-16.7%
11	Kitsap County Estimated	703	-15.8%
12	Whatcom County Estimated	597	+21.8%
13	Adams County Estimated	281	+10.6%
14	Douglas County Estimated	209	-7.5%
15	Skagit County Estimated	161	-32.1%
16	Chelan County Estimated	128	-40.7%
17	Island County Estimated	103	-43.1%
18	Whitman County Estimated	96	-39.2%
19	Kittitas County Estimated	95	-13.6%
20	Cowlitz County Estimated	42	-53.8%
21	Okanogan County Estimated	29	-59.7%
22	Klickitat County Estimated	22	+210%
23	Walla Walla County Estimated	16	-50%
24	Skamania County Estimated	15	+236.4%
25	Ferry County Estimated	-10	+9.1%
26	Wahkiakum County Estimated	-13	+35%
27	Columbia County Estimated	-18	+41.9%
28	Garfield County Estimated	-22	-283.3%
29	Lincoln County Estimated	-29	-123.1%
30	Asotin County Estimated	-33	-13.8%
31	Stevens County Estimated	-40	-29%
32	Mason County Estimated	-47	-23.7%
33	Pend Oreille County Estimated	-55	-223.5%
33	San Juan County Estimated	-55	+15.4%
35	Lewis County Estimated	-69	-346.4%
36	Grays Harbor County Estimated	-144	-25.2%
37	Pacific County Estimated	-175	-59.1%
38	Jefferson County Estimated	-218	-10.1%
39	Clallam County Estimated	-392	-9.8%

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 Washington 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 Washington 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/washington-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 Washington 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/washington-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 Washington 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/washington-counties?period=2018 (Accessed: 12 October 2026).

BibTeX

@misc{census_counties_in_washington_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 Washington 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/washington-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 Washington 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/washington-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/natural-change-july-june/washington-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?

King County, with 11,733 in 2018, according to the U.S. Census Bureau.

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

Clallam County, with -392 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.