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Counties by Foreign-Born Population

Foreign-born share measures residents born outside the U.S., including naturalized citizens, green card holders, and others.

All 3,199 counties ranked by Foreign-Born Population, from highest to lowest. Click the column header to reverse sort order. Data from the U.S. Census Bureau, ACS 5-Year Estimates, 2023.

States Counties Cities Metros ZIPs
# Counties Foreign-Born Population ↓
1 Doña Ana County, New Mexico 85.2%
2 Merrimack County, New Hampshire 74.1%
3 Rockingham County, New Hampshire 59.3%
4 Grafton County, New Hampshire 50.8%
5 Franklin Parish, Louisiana 49.0%
6 Kodiak Island Borough, Alaska 45.2%
7 Aleutians West Census Area, Alaska 44.1%
8 Logan County, Kansas 44.1%
9 Silver Bow County, Montana 43.4%
10 Dawson County, Montana 43.3%
11 Sullivan County, New Hampshire 42.7%
12 Hudson County, New Jersey 42.6%
13 Pratt County, Kansas 42.3%
14 De Soto Parish, Louisiana 38.9%
15 Kenedy County, Texas 38.5%
16 Scotland County, North Carolina 38.1%
17 Sweet Grass County, Montana 37.7%
18 Allen Parish, Louisiana 37.0%
19 Grant Parish, Louisiana 36.7%
20 Manassas Park city, Virginia 36.6%
21 Plymouth County, Iowa 36.4%
22 Broward County, Florida 36.2%
23 East Baton Rouge Parish, Louisiana 35.8%
24 Miami County, Kansas 35.3%
25 Matanuska-Susitna Borough, Alaska 34.8%
26 Middlesex County, New Jersey 34.7%
27 Scott County, Kansas 34.6%
28 San Francisco County, California 34.2%
29 Santa Cruz County, Arizona 34.1%
30 Louisa County, Iowa 33.7%
31 Montgomery County, Maryland 33.4%
32 Blaine County, Montana 33.4%
33 Lyon County, Kansas 33.2%
34 Union County, New Jersey 32.8%
35 Passaic County, New Jersey 32.8%
36 Aleutians East Borough, Alaska 32.4%
37 Phillips County, Montana 32.4%
38 Manassas city, Virginia 31.8%
39 Bergen County, New Jersey 31.4%
40 Coleman County, Texas 31.3%
41 Imperial County, California 30.8%
42 Rapides Parish, Louisiana 30.8%
43 Fairfax County, Virginia 30.8%
44 Mitchell County, Texas 30.8%
45 Dimmit County, Texas 30.6%
46 Lake County, Montana 30.6%
47 Lincoln County, Kansas 30.5%
48 Fairfax city, Virginia 30.5%
49 Kenai Peninsula Borough, Alaska 30.4%
50 Crockett County, Texas 29.7%
51 Sumner County, Kansas 29.6%
52 Jefferson County, Washington 29.3%
53 Essex County, New Jersey 29.3%
54 District of Columbia, District of Columbia 29.3%
55 Bullitt County, Kentucky 29.2%
56 Potter County, Texas 29.0%
57 Beaufort County, North Carolina 28.7%
58 Claiborne Parish, Louisiana 28.6%
59 Jefferson County, Montana 28.3%
60 Rio Grande County, Colorado 28.2%
61 New York County, New York 28.1%
62 Elbert County, Colorado 27.6%
63 Somerset County, New Jersey 27.5%
64 Colusa County, California 27.5%
65 Tehama County, California 27.2%
66 Crawford County, Kansas 27.1%
67 Presidio County, Texas 27.0%
68 Palm Beach County, Florida 26.9%
69 Kent County, Delaware 26.8%
70 Loudoun County, Virginia 26.7%
71 Phillips County, Kansas 26.4%
72 Prince William County, Virginia 26.2%
73 Bossier Parish, Louisiana 26.2%
74 Lee County, Iowa 26.2%
75 Merced County, California 26.1%
76 Hays County, Texas 25.9%
77 Collin County, Texas 25.7%
78 Mercer County, New Jersey 25.7%
79 Westchester County, New York 25.6%
80 Richland County, Wisconsin 25.6%
81 Carter County, Kentucky 25.4%
82 Webb County, Texas 25.3%
83 Lee County, Virginia 25.3%
84 Hemphill County, Texas 25.2%
85 Richmond County, New York 25.2%
86 St. Mary Parish, Louisiana 25.2%
87 Park County, Montana 25.0%
88 Osceola County, Florida 25.0%
89 LaGrange County, Indiana 25.0%
90 Prince George's County, Maryland 24.9%
91 Sussex County, Delaware 24.7%
92 Dallas County, Texas 24.6%
93 Rush County, Kansas 24.6%
94 San Joaquin County, California 24.5%
95 Atchison County, Kansas 24.4%
96 Collier County, Florida 24.2%
97 Richland County, Montana 24.2%
98 Fulton County, Kentucky 24.2%
99 Texas County, Oklahoma 23.9%
100 Custer County, Montana 23.9%