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

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

56 counties.

#	County
1	Missoula County	59.0%	37.5%
2	Glacier County	57.8%	38.2%
3	Silver Bow County	51.5%	44.5%
4	Gallatin County	50.0%	46.8%
5	Deer Lodge County	48.8%	47.8%
6	Big Horn County	47.2%	48.9%
7	Lewis and Clark County	45.4%	51.1%
8	Blaine County	44.7%	50.5%
9	Park County	44.6%	52.3%
10	Roosevelt County	42.9%	52.5%
11	Hill County	38.7%	56.9%
12	Lake County	38.5%	58.4%
13	Cascade County	37.3%	59.7%
14	Yellowstone County	34.9%	62.0%
15	Carbon County	32.2%	64.7%
16	Chouteau County	32.0%	64.2%
17	Flathead County	31.8%	65.6%
18	Jefferson County	30.3%	66.9%
19	Rosebud County	29.7%	66.8%
20	Ravalli County	28.4%	68.9%
21	Pondera County	27.4%	69.1%
22	Beaverhead County	26.6%	70.0%
23	Granite County	26.6%	70.6%
24	Sheridan County	26.6%	69.1%
25	Madison County	26.1%	71.4%
26	Teton County	26.0%	71.0%
27	Mineral County	24.3%	72.3%
28	Custer County	23.9%	72.6%
29	Valley County	22.9%	74.0%
30	Fergus County	22.7%	74.0%
31	Lincoln County	22.2%	75.6%
32	Sweet Grass County	22.0%	75.1%
33	Meagher County	21.8%	75.8%
34	Liberty County	21.7%	76.1%
35	Powell County	21.6%	75.1%
36	Sanders County	21.1%	76.2%
37	Toole County	20.3%	76.8%
38	Judith Basin County	19.6%	77.7%
39	Dawson County	19.3%	78.2%
40	Wheatland County	19.2%	77.6%
41	Broadwater County	18.4%	78.4%
42	Stillwater County	17.9%	79.6%
43	Prairie County	17.7%	79.4%
44	Phillips County	17.6%	80.1%
45	Daniels County	16.2%	81.8%
46	Richland County	14.7%	82.6%
47	Musselshell County	13.1%	84.7%
48	Golden Valley County	13.0%	85.4%
49	Wibaux County	13.0%	84.8%
50	Treasure County	12.9%	83.0%

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