What are the richest counties in the U.S.?

Loudoun County, VA ($181,765), Santa Clara County, CA ($164,281) and San Mateo County, CA ($158,855) had the highest median household income in the U.S. in the 2020–24 survey.

Data as of 2024 · updated November 5, 2026

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Top 100 U.S. counties by median household income

U.S. counties with at least 10,000 residents ranked by median household income
Rank	County	Median household income 2020–24	Change since 2016–20	Residents
1	Loudoun County, VA	$181,765	+23.6%	449,749
2	Santa Clara County, CA	$164,281	+25.5%	1,914,391
3	San Mateo County, CA	$158,855	+24.0%	743,568
4	Fairfax County, VA	$153,637	+20.2%	1,167,873
5	Howard County, MD	$149,763	+20.7%	339,183
6	Douglas County, CO	$149,594	+23.2%	399,396
7	Marin County, CA	$149,091	+22.5%	253,694
8	Los Alamos County, NM	$147,139	+23.4%	19,407
9	Nassau County, NY	$146,202	+21.8%	1,398,939
10	Forsyth County, GA	$143,784	+27.4%	282,805
11	Falls Church (city), VA	$143,262	−2.5%	15,159
12	Arlington County, VA	$142,114	+15.9%	243,931
13	Hunterdon County, NJ	$141,715	+20.2%	131,781
14	San Francisco County, CA	$140,970	+18.3%	826,079
15	Somerset County, NJ	$140,374	+20.5%	356,486
16	Nantucket County, MA	$139,688	+24.4%	14,758
17	Summit County, UT	$138,114	+29.1%	43,141
18	Stafford County, VA	$137,807	+22.8%	170,803
19	Morris County, NJ	$137,326	+17.1%	524,251
20	Williamson County, TN	$135,594	+21.9%	272,061
21	Calvert County, MD	$133,922	+18.8%	94,484
22	Delaware County, OH	$133,540	+19.9%	242,032
23	Elbert County, CO	$132,685	+27.3%	30,534
24	Montgomery County, MD	$132,450	+18.5%	1,074,582
25	Fairfax (city), VA	$132,348	+20.6%	26,772
26	Prince William County, VA	$131,402	+22.0%	502,966
27	Morgan County, UT	$130,929	+30.4%	13,383
28	Middlesex County, MA	$130,847	+23.2%	1,669,979
29	Norfolk County, MA	$130,739	+24.1%	739,749
30	Suffolk County, NY	$130,686	+24.0%	1,546,090
31	Fauquier County, VA	$130,189	+23.2%	76,503
32	Alameda County, CA	$129,367	+23.3%	1,636,630
33	Western Connecticut Planning Region, CT	$128,188	–	640,482
34	Rockwall County, TX	$127,981	+20.8%	140,738
35	Contra Costa County, CA	$127,229	+22.3%	1,170,070
36	Chester County, PA	$127,208	+22.1%	557,116
37	Putnam County, NY	$126,257	+17.7%	99,028
38	Carver County, MN	$125,946	+21.1%	114,379
39	Dukes County, MA	$125,786	+62.7%	21,219
40	Anne Arundel County, MD	$124,911	+21.0%	603,380
41	Bergen County, NJ	$124,884	+19.4%	977,026
42	Monmouth County, NJ	$124,845	+20.6%	651,035
43	King County, WA	$124,746	+25.8%	2,344,939
44	Teton County, WY	$124,172	+42.6%	23,333
45	Broomfield County, CO	$123,874	+22.4%	79,174
46	New Kent County, VA	$123,314	+26.2%	28,022
47	Charles County, MD	$122,816	+18.5%	176,593
48	Oldham County, KY	$122,497	+18.1%	70,986
49	Frederick County, MD	$122,002	+21.2%	302,883
50	Collin County, TX	$121,600	+20.9%	1,297,179
51	Hamilton County, IN	$121,530	+22.9%	387,036
52	Oconee County, GA	$121,217	+27.5%	44,893
53	Poquoson (city), VA	$120,972	+20.1%	13,292
54	Alexandria (city), VA	$119,681	+17.1%	160,662
55	St. Mary's County, MD	$119,446	+24.6%	116,692
56	Scott County, MN	$119,314	+15.5%	159,017
57	Westchester County, NY	$118,976	+19.6%	1,015,743
58	Goochland County, VA	$118,931	+22.4%	29,187
59	Rockingham County, NH	$118,331	+25.9%	324,077
60	Carroll County, MD	$118,211	+18.7%	176,677
61	Wasatch County, UT	$117,608	+37.1%	38,514
62	Clarke County, VA	$117,111	+35.9%	15,609
63	King George County, VA	$116,884	+20.9%	29,646
64	Orange County, CA	$116,289	+23.1%	3,149,507
65	Sussex County, NJ	$116,186	+20.7%	148,063
66	Placer County, CA	$115,998	+23.8%	442,081
67	Washington County, MN	$115,345	+18.2%	286,895
68	Kendall County, TX	$114,962	+16.5%	53,289
69	Bucks County, PA	$114,764	+23.2%	647,828
70	Bristol County, RI	$114,490	+34.0%	50,001
71	San Benito County, CA	$114,394	+33.3%	70,082
72	Plymouth County, MA	$114,201	+22.9%	546,829
73	Fort Bend County, TX	$114,041	+13.8%	975,191
74	Montgomery County, PA	$113,915	+21.8%	877,643
75	Manassas (city), VA	$113,590	+31.7%	44,332
76	Queen Anne's County, MD	$112,826	+17.0%	54,448
77	Hanover County, VA	$112,805	+23.4%	116,423
78	Spotsylvania County, VA	$112,738	+24.0%	155,388
79	Union County, OH	$112,322	+26.8%	73,446
80	Harford County, MD	$112,265	+19.4%	266,446
81	DuPage County, IL	$112,096	+18.1%	934,298
82	Fayette County, GA	$111,978	+19.4%	125,156
83	Kendall County, IL	$111,601	+15.2%	145,470
84	Middlesex County, NJ	$111,549	+21.6%	883,335
85	Denton County, TX	$111,498	+23.4%	1,069,346
86	Napa County, CA	$111,471	+20.9%	132,949
87	Williamson County, TX	$111,340	+22.6%	752,827
88	Boone County, IN	$111,250	+24.4%	80,689
89	Snohomish County, WA	$111,246	+24.6%	870,656
90	Santa Cruz County, CA	$111,093	+23.5%	258,852
91	Davis County, UT	$110,884	+26.6%	381,227
92	Jefferson County, CO	$110,656	+26.0%	580,451
93	Powhatan County, VA	$110,537	+17.8%	32,591
94	Lake County, IL	$110,416	+19.2%	719,339
95	Warren County, OH	$110,132	+23.2%	257,181
96	James City County, VA	$109,985	+20.0%	83,326
97	Will County, IL	$109,984	+21.1%	712,253
98	Rockland County, NY	$109,959	+15.9%	357,397
99	York County, VA	$109,956	+17.8%	71,374
100	District of Columbia, DC	$109,870	+20.9%	693,645

How this is ranked

Median household income from the Census Bureau's American Community Survey 5-year estimates (2020–24). Survey estimates carry margins of error, so counties a few hundred dollars apart may not really differ. Only counties with at least 10,000 residents are listed here (the top 100); each county's own page ranks it against every U.S. county with the same figure. Counties with fewer than 1,000 residents, or without a figure for the same period as the others, are not ranked.

Source: U.S. Census Bureau, American Community Survey 5-year estimates. Figures come from public federal statistics and are informational only, not investment advice. Check the source before relying on a number. Methodology: how ranks and figures are built. More on every layer: data sources and licences.

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Questions

Which county in the U.S. has the highest median household income?

Loudoun County, VA: $181,765, ahead of Santa Clara County, CA ($164,281) and San Mateo County, CA ($158,855), of 2,407 U.S. counties with at least 10,000 residents ranked.

How is this ranking calculated?

What are the richest counties in the U.S.?

Top 100 U.S. counties by median household income

How this is ranked

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Questions

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Median household income in other states