Counties ranked

The richest counties in America

Loudoun County, VA ranks first by median household income ($181,765). Median household income in 2024 dollars; counties whose estimate is unreliable are left out.

Which U.S. counties have the highest median household income?

First to fifth: Loudoun County, VA ($181,765), Santa Clara County, CA ($164,281), San Mateo County, CA ($158,855), Fairfax County, VA ($153,637) and Howard County, MD ($149,763).

The richest counties in America, by median household income (the first 100 of 3,141). "Within the margin": the survey cannot tell it from the next one.
RankCountyMedian household incomeResidents, 2025
1 Loudoun County, VA $181,765±$3,438 449,749
2 Santa Clara County, CA $164,281±$1,955 1,914,391
3 San Mateo County, CA $158,855±$2,851 743,568
4 Fairfax County, VA $153,637±$1,635 1,167,873
5 Howard County, MDwithin the margin $149,763±$3,158 339,183
6 Douglas County, COwithin the margin $149,594±$2,519 399,396
7 Marin County, CAwithin the margin $149,091±$4,474 253,694
8 Los Alamos County, NMwithin the margin $147,139±$10,556 19,407
9 Nassau County, NYwithin the margin $146,202±$1,472 1,398,939
10 Forsyth County, GAwithin the margin $143,784±$2,813 282,805
11 Falls Church city, VAwithin the margin $143,262±$15,432 15,159
12 Arlington County, VAwithin the margin $142,114±$3,551 243,931
13 Hunterdon County, NJwithin the margin $141,715±$3,618 131,781
14 San Francisco County, CAwithin the margin $140,970±$2,593 826,079
15 Somerset County, NJwithin the margin $140,374±$3,294 356,486
16 Nantucket County, MAwithin the margin $139,688±$16,786 14,758
17 Summit County, UTwithin the margin $138,114±$7,368 43,141
18 Stafford County, VAwithin the margin $137,807±$4,821 170,803
19 Morris County, NJwithin the margin $137,326±$2,991 524,251
20 Williamson County, TNwithin the margin $135,594±$4,044 272,061
21 Aleutians West Census Area, AKwithin the margin $135,500±$14,096 5,240
22 Calvert County, MDwithin the margin $133,922±$4,535 94,484
23 Delaware County, OHwithin the margin $133,540±$2,345 242,032
24 Elbert County, COwithin the margin $132,685±$7,368 30,534
25 Montgomery County, MDwithin the margin $132,450±$2,073 1,074,582
26 Fairfax city, VAwithin the margin $132,348±$10,015 26,772
27 Prince William County, VAwithin the margin $131,402±$2,625 502,966
28 Morgan County, UTwithin the margin $130,929±$7,500 13,383
29 Middlesex County, MAwithin the margin $130,847±$1,164 1,669,979
30 Norfolk County, MAwithin the margin $130,739±$2,551 739,749
31 Suffolk County, NYwithin the margin $130,686±$1,707 1,546,090
32 Fauquier County, VAwithin the margin $130,189±$8,609 76,503
33 Alameda County, CAwithin the margin $129,367±$1,284 1,636,630
34 Western Connecticut Planning Region, CTwithin the margin $128,188±$2,370 640,482
35 Rockwall County, TXwithin the margin $127,981±$4,257 140,738
36 Contra Costa County, CAwithin the margin $127,229±$1,713 1,170,070
37 Chester County, PAwithin the margin $127,208±$2,511 557,116
38 Putnam County, NYwithin the margin $126,257±$5,160 99,028
39 Carver County, MNwithin the margin $125,946±$3,700 114,379
40 Dukes County, MAwithin the margin $125,786±$14,169 21,219
41 Anne Arundel County, MDwithin the margin $124,911±$1,826 603,380
42 Bergen County, NJwithin the margin $124,884±$1,735 977,026
43 Monmouth County, NJwithin the margin $124,845±$2,115 651,035
44 King County, WAwithin the margin $124,746±$968 2,344,939
45 Teton County, WYwithin the margin $124,172±$24,638 23,333
46 Broomfield County, COwithin the margin $123,874±$3,714 79,174
47 New Kent County, VAwithin the margin $123,314±$7,122 28,022
48 Charles County, MDwithin the margin $122,816±$3,121 176,593
49 Oldham County, KYwithin the margin $122,497±$5,474 70,986
50 Frederick County, MDwithin the margin $122,002±$2,489 302,883
51 Collin County, TXwithin the margin $121,600±$1,883 1,297,179
52 Hamilton County, INwithin the margin $121,530±$2,737 387,036
53 Oconee County, GAwithin the margin $121,217±$9,495 44,893
54 Poquoson city, VAwithin the margin $120,972±$13,412 13,292
55 Alexandria city, VAwithin the margin $119,681±$2,819 160,662
56 St. Mary's County, MDwithin the margin $119,446±$4,480 116,692
57 Scott County, MNwithin the margin $119,314±$3,959 159,017
58 Westchester County, NYwithin the margin $118,976±$2,567 1,015,743
59 Goochland County, VAwithin the margin $118,931±$7,243 29,187
60 Rockingham County, NHwithin the margin $118,331±$2,820 324,077
61 Carroll County, MDwithin the margin $118,211±$3,883 176,677
62 Wasatch County, UTwithin the margin $117,608±$8,505 38,514
63 Clarke County, VAwithin the margin $117,111±$12,127 15,609
64 King George County, VAwithin the margin $116,884±$7,078 29,646
65 Orange County, CAwithin the margin $116,289±$871 3,149,507
66 Sussex County, NJwithin the margin $116,186±$2,466 148,063
67 Placer County, CAwithin the margin $115,998±$2,483 442,081
68 Washington County, MNwithin the margin $115,345±$2,183 286,895
69 Kendall County, TXwithin the margin $114,962±$8,014 53,289
70 Bucks County, PAwithin the margin $114,764±$2,067 647,828
71 Bristol County, RIwithin the margin $114,490±$5,860 50,001
72 San Benito County, CAwithin the margin $114,394±$5,136 70,082
73 Plymouth County, MAwithin the margin $114,201±$1,841 546,829
74 Fort Bend County, TXwithin the margin $114,041±$1,899 975,191
75 Montgomery County, PAwithin the margin $113,915±$1,905 877,643
76 Manassas city, VAwithin the margin $113,590±$8,224 44,332
77 Queen Anne's County, MDwithin the margin $112,826±$6,672 54,448
78 Hanover County, VAwithin the margin $112,805±$4,144 116,423
79 Spotsylvania County, VAwithin the margin $112,738±$4,298 155,388
80 Union County, OHwithin the margin $112,322±$3,644 73,446
81 Harford County, MDwithin the margin $112,265±$2,167 266,446
82 DuPage County, ILwithin the margin $112,096±$1,607 934,298
83 Fayette County, GAwithin the margin $111,978±$4,052 125,156
84 Kendall County, ILwithin the margin $111,601±$3,257 145,470
85 Middlesex County, NJwithin the margin $111,549±$1,881 883,335
86 Denton County, TXwithin the margin $111,498±$1,485 1,069,346
87 Napa County, CAwithin the margin $111,471±$4,025 132,949
88 Williamson County, TXwithin the margin $111,340±$1,581 752,827
89 Boone County, INwithin the margin $111,250±$3,743 80,689
90 Snohomish County, WAwithin the margin $111,246±$1,305 870,656
91 Santa Cruz County, CAwithin the margin $111,093±$2,734 258,852
92 Davis County, UTwithin the margin $110,884±$2,880 381,227
93 Jefferson County, COwithin the margin $110,656±$1,614 580,451
94 Powhatan County, VAwithin the margin $110,537±$6,157 32,591
95 Lake County, ILwithin the margin $110,416±$1,747 719,339
96 Warren County, OHwithin the margin $110,132±$2,685 257,181
97 James City County, VAwithin the margin $109,985±$5,164 83,326
98 Will County, ILwithin the margin $109,984±$1,819 712,253
99 Rockland County, NYwithin the margin $109,959±$2,755 357,397
100 York County, VA $109,956±$4,078 71,374

Source: ACS 2020-2024 5-year estimates, U.S. Census Bureau · Check it at data.census.gov

How is this ranking made?

One figure is read for each county: the median household income. A survey estimate with a coefficient of variation over 40% is left out. Equal figures share a rank, listed in order of mean household income. A ranking measures one number; it is not a judgment of a place. The rules are on the methodology page (how a survey figure's reliability is judged), and every ranking is on the rankings page.

Source: PlainCities ranking method applied to the ACS 2020-2024 5-year estimates, U.S. Census Bureau · How ranks are computed