Which U.S. county has the most people?

Los Angeles County, California, with 9,808,667 people (Census Bureau, American Community Survey 2020–2024).

Which large county has the highest median household income?

Among the 620 counties of 100,000 people or more: Loudoun County, Virginia, $181,765 (American Community Survey 2020–2024).

Which large county has the highest share of people without health insurance?

Among counties of 100,000 or more: Hidalgo County, Texas, 28.2% (American Community Survey 2020–2024).

How does "places like mine" work?

Pick a place and the figures to compare on. Each figure is put on the same scale (how far a place is from the average, in standard deviations; money and population on a log scale), and the places with the smallest overall difference are listed. It's a comparison of published figures, nothing more.

Compare places on official figures

Every U.S. state, county and congressional district on the figures the Census Bureau, the Bureau of Labor Statistics and the FBI publish, and on certified election results since 2000 (past results): sort and filter them, chart any two figures against each other, or find the places most like yours. Every link keeps your view, so you can share exactly what you see.

Places

Figures

Sort

Washington counties by Democratic share of the 2024 presidential vote, highest first

39 counties.

#	County
1	King County	73.6%	22.3%
2	San Juan County	73.3%	22.2%
3	Jefferson County	70.7%	25.6%
4	Whatcom County	60.4%	35.7%
5	Kitsap County	58.5%	37.7%
6	Thurston County	58.1%	37.9%
7	Snohomish County	57.4%	38.6%
8	Island County	56.4%	40.0%
9	Pierce County	53.5%	42.8%
10	Skagit County	52.6%	43.8%
11	Clallam County	52.3%	44.5%
12	Whitman County	52.3%	43.4%
13	Clark County	51.8%	44.8%
14	Pacific County	47.9%	49.2%
15	Mason County	46.9%	49.4%
16	Spokane County	45.7%	50.6%
17	Grays Harbor County	45.4%	51.4%
18	Walla Walla County	44.3%	52.3%
19	Chelan County	43.6%	53.0%
20	Klickitat County	43.5%	52.8%
21	Skamania County	42.8%	53.9%
22	Yakima County	41.4%	55.6%
23	Kittitas County	40.8%	55.3%
24	Okanogan County	40.8%	55.7%
25	Wahkiakum County	39.3%	57.4%
26	Cowlitz County	38.5%	58.3%
27	Benton County	37.4%	59.1%
28	Franklin County	37.3%	59.8%
29	Asotin County	35.6%	61.1%
30	Douglas County	35.0%	61.8%
31	Ferry County	31.9%	64.7%
32	Lewis County	31.8%	64.7%
33	Grant County	29.8%	67.1%
34	Pend Oreille County	28.8%	68.2%
35	Adams County	27.1%	70.2%
36	Columbia County	26.6%	69.9%
37	Stevens County	26.5%	70.4%
38	Garfield County	24.4%	72.0%
39	Lincoln County	23.5%	73.8%

Where these figures come from

Census Bureau, American Community Survey 2020–2024 (5-year estimates): people, age, income, poverty, college degrees, home values, health insurance, housing costs, birthplace, veterans, race and Hispanic origin. Each is an estimate with a margin of error, wider for small counties.
Bureau of Labor Statistics, Local Area Unemployment Statistics: the unemployment rate for September 2026 (preliminary), not seasonally adjusted (the only way BLS publishes counties; states are shown the same way so they compare).
FBI: violent and property crimes reported to police per 100,000 residents. States: the FBI's estimates. Counties: the latest year every police agency in the county reported all 12 months, shown beside the figure, so years differ between counties. Sworn officers per 1,000 residents from the FBI's Law Enforcement Employees count.
Census of Governments 2022: local governments in each county: the county itself, cities and towns, townships, school districts and special districts.
Election results: each party's candidate's share of all votes cast, write-ins included. The presidential vote by state is the Federal Election Commission's compilation of each state's certified results (2004–2024; 2000 adds up the counties); by county, the MIT Election Data and Science Lab's County Presidential Election Returns 2000–2024, from official results (Alaska reports by state House district and Connecticut's figures are by its eight former counties, so Alaska's boroughs and Connecticut's planning regions have none). The 2024 U.S. House vote by district is from the same lab, on the districts as drawn in 2024. A district where only one party's candidate ran shows that candidate's share and none for the other. Every candidate and vote total →
Reading a comparison: these are published figures, shown as published. "Highest" and "lowest" describe the numbers, not how good a place is, and two figures that move together don't show that one causes the other.

Every figure is also on each place's own page. All sources · Methodology

Quick answers

Which U.S. county has the most people?: Los Angeles County, California, with 9,808,667 people (Census Bureau, American Community Survey 2020–2024).
Which large county has the highest median household income?: Among the 620 counties of 100,000 people or more: Loudoun County, Virginia, $181,765 (American Community Survey 2020–2024).
Which large county has the highest share of people without health insurance?: Among counties of 100,000 or more: Hidalgo County, Texas, 28.2% (American Community Survey 2020–2024).
How does "places like mine" work?: Pick a place and the figures to compare on. Each figure is put on the same scale (how far a place is from the average, in standard deviations; money and population on a log scale), and the places with the smallest overall difference are listed. It's a comparison of published figures, nothing more.

See something wrong on this page? Report a problem · Corrections