Ranking of US Counties By Percentage of Population with Australian Ancestry in 2021
Updated on March 2, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, among all US counties with a population of at least 50K, Iron County, UT had the highest percentage of population with Australian ancestry (0.25%), followed by Medina County, TX (0.23%), and New York County, NY (0.21%).
The chart below shows the top 10 counties with high percentage of population with Australian ancestry, and the table below shows the ranking of the top 200 counties.
You can see similar information for other ancestry groups in the US.
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Related Topics: US Census 2021 Topic List.
Data Source: US Census Bureau.
Ranking of US Counties By Percentage of Population with Australian Ancestry in 2021
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| Rank | County | Percentage of Pop. |
|---|---|---|
| 1 | Iron County, UT | 0.25 |
| 2 | Medina County, TX | 0.23 |
| 3 | New York County, NY | 0.21 |
| 3 | Ashland County, OH | 0.21 |
| 3 | Comanche County, OK | 0.21 |
| 4 | Rusk County, TX | 0.19 |
| 4 | Arlington County, VA | 0.19 |
| 5 | Columbia County, OR | 0.18 |
| 5 | Putnam County, TN | 0.18 |
| 6 | Marin County, CA | 0.17 |
| 6 | Tehama County, CA | 0.17 |
| 6 | Cherokee County, GA | 0.17 |
| 7 | St. Charles Parish, LA | 0.16 |
| 7 | Gallatin County, MT | 0.16 |
| 7 | Rutherford County, NC | 0.16 |
| 7 | Jefferson County, OH | 0.16 |
| 8 | Jasper County, MO | 0.15 |
| 8 | Cape May County, NJ | 0.15 |
| 8 | Loudoun County, VA | 0.15 |
| 9 | San Francisco County, CA | 0.14 |
| 9 | Monroe County, FL | 0.14 |
| 9 | Somerset County, ME | 0.14 |
| 9 | Davis County, UT | 0.14 |
| 10 | Douglas County, CO | 0.13 |
| 10 | Allegan County, MI | 0.13 |
| 10 | Skagit County, WA | 0.13 |
| 10 | Thurston County, WA | 0.13 |
| 11 | Walton County, FL | 0.12 |
| 11 | Warren County, IA | 0.12 |
| 11 | Steuben County, NY | 0.12 |
| 11 | Walla Walla County, WA | 0.12 |
| 12 | Lee County, AL | 0.11 |
| 12 | El Dorado County, CA | 0.11 |
| 12 | Nevada County, CA | 0.11 |
| 12 | Kosciusko County, IN | 0.11 |
| 12 | Pulaski County, KY | 0.11 |
| 12 | Randolph County, NC | 0.11 |
| 12 | Wood County, OH | 0.11 |
| 12 | Columbia County, PA | 0.11 |
| 12 | Waller County, TX | 0.11 |
| 12 | Jefferson County, WV | 0.11 |
| 13 | Contra Costa County, CA | 0.10 |
| 13 | Boulder County, CO | 0.10 |
| 13 | Eagle County, CO | 0.10 |
| 13 | Rockdale County, GA | 0.10 |
| 13 | Cumberland County, ME | 0.10 |
| 13 | St. Mary's County, MD | 0.10 |
| 13 | Barnstable County, MA | 0.10 |
| 13 | Lapeer County, MI | 0.10 |
| 13 | Ottawa County, MI | 0.10 |
| 13 | Grafton County, NH | 0.10 |
| 13 | Lane County, OR | 0.10 |
| 13 | Polk County, OR | 0.10 |
| 13 | Smith County, TX | 0.10 |
| 13 | York County, VA | 0.10 |
| 14 | San Luis Obispo County, CA | 0.09 |
| 14 | Putnam County, FL | 0.09 |
| 14 | Canyon County, ID | 0.09 |
| 14 | DeKalb County, IL | 0.09 |
| 14 | Bullitt County, KY | 0.09 |
| 14 | Wayne County, NY | 0.09 |
| 14 | Granville County, NC | 0.09 |
| 14 | Wayne County, OH | 0.09 |
| 14 | Klamath County, OR | 0.09 |
| 14 | Cherokee County, TX | 0.09 |
| 14 | Rockwall County, TX | 0.09 |
| 14 | Grant County, WA | 0.09 |
| 14 | Whatcom County, WA | 0.09 |
| 14 | Racine County, WI | 0.09 |
| 14 | Rock County, WI | 0.09 |
| 15 | Placer County, CA | 0.08 |
| 15 | Sonoma County, CA | 0.08 |
| 15 | Columbia County, FL | 0.08 |
| 15 | Pottawattamie County, IA | 0.08 |
| 15 | Washoe County, NV | 0.08 |
| 15 | Kings County, NY | 0.08 |
| 15 | Richmond County, NY | 0.08 |
| 15 | Clark County, OH | 0.08 |
| 15 | Greene County, OH | 0.08 |
| 15 | Wagoner County, OK | 0.08 |
| 15 | Benton County, OR | 0.08 |
| 15 | Liberty County, TX | 0.08 |
| 15 | Salt Lake County, UT | 0.08 |
| 15 | King County, WA | 0.08 |
| 15 | St. Croix County, WI | 0.08 |
| 16 | Napa County, CA | 0.07 |
| 16 | Santa Barbara County, CA | 0.07 |
| 16 | Ventura County, CA | 0.07 |
| 16 | Fairfield County, CT | 0.07 |
| 16 | Pinellas County, FL | 0.07 |
| 16 | Sarasota County, FL | 0.07 |
| 16 | Kauai County, HI | 0.07 |
| 16 | Vigo County, IN | 0.07 |
| 16 | Boone County, KY | 0.07 |
| 16 | Lenawee County, MI | 0.07 |
| 16 | St. Clair County, MI | 0.07 |
| 16 | Buchanan County, MO | 0.07 |
| 16 | Clark County, NV | 0.07 |
| 16 | Salem County, NJ | 0.07 |
| 16 | Union County, NJ | 0.07 |
| 16 | Ulster County, NY | 0.07 |
| 16 | Carteret County, NC | 0.07 |
| 16 | Chatham County, NC | 0.07 |
| 16 | Josephine County, OR | 0.07 |
| 16 | Williamson County, TX | 0.07 |
| 16 | Cache County, UT | 0.07 |
| 16 | Tooele County, UT | 0.07 |
| 16 | Utah County, UT | 0.07 |
| 16 | Harrisonburg city, VA | 0.07 |
| 16 | Benton County, WA | 0.07 |
| 16 | Island County, WA | 0.07 |
| 17 | Los Angeles County, CA | 0.06 |
| 17 | San Mateo County, CA | 0.06 |
| 17 | Santa Clara County, CA | 0.06 |
| 17 | Tuolumne County, CA | 0.06 |
| 17 | Arapahoe County, CO | 0.06 |
| 17 | Larimer County, CO | 0.06 |
| 17 | Broward County, FL | 0.06 |
| 17 | Effingham County, GA | 0.06 |
| 17 | Ada County, ID | 0.06 |
| 17 | Kootenai County, ID | 0.06 |
| 17 | Knox County, IL | 0.06 |
| 17 | Campbell County, KY | 0.06 |
| 17 | Terrebonne Parish, LA | 0.06 |
| 17 | Harford County, MD | 0.06 |
| 17 | Montgomery County, MD | 0.06 |
| 17 | Norfolk County, MA | 0.06 |
| 17 | Crow Wing County, MN | 0.06 |
| 17 | Platte County, MO | 0.06 |
| 17 | Flathead County, MT | 0.06 |
| 17 | Cumberland County, NJ | 0.06 |
| 17 | Hudson County, NJ | 0.06 |
| 17 | Westchester County, NY | 0.06 |
| 17 | Haywood County, NC | 0.06 |
| 17 | Watauga County, NC | 0.06 |
| 17 | Geauga County, OH | 0.06 |
| 17 | Clackamas County, OR | 0.06 |
| 17 | Chester County, PA | 0.06 |
| 17 | Robertson County, TN | 0.06 |
| 17 | Brazos County, TX | 0.06 |
| 17 | Travis County, TX | 0.06 |
| 17 | Box Elder County, UT | 0.06 |
| 17 | Windsor County, VT | 0.06 |
| 17 | James City County, VA | 0.06 |
| 17 | Cowlitz County, WA | 0.06 |
| 17 | Pierce County, WA | 0.06 |
| 17 | Snohomish County, WA | 0.06 |
| 17 | Ozaukee County, WI | 0.06 |
| 18 | Cullman County, AL | 0.05 |
| 18 | Mohave County, AZ | 0.05 |
| 18 | Saline County, AR | 0.05 |
| 18 | Butte County, CA | 0.05 |
| 18 | Orange County, CA | 0.05 |
| 18 | Jefferson County, CO | 0.05 |
| 18 | Tolland County, CT | 0.05 |
| 18 | Brevard County, FL | 0.05 |
| 18 | Escambia County, FL | 0.05 |
| 18 | Indian River County, FL | 0.05 |
| 18 | St. Johns County, FL | 0.05 |
| 18 | Cobb County, GA | 0.05 |
| 18 | Houston County, GA | 0.05 |
| 18 | Newton County, GA | 0.05 |
| 18 | Honolulu County, HI | 0.05 |
| 18 | Maui County, HI | 0.05 |
| 18 | Hamilton County, IN | 0.05 |
| 18 | Johnson County, IA | 0.05 |
| 18 | Ouachita Parish, LA | 0.05 |
| 18 | York County, ME | 0.05 |
| 18 | Frederick County, MD | 0.05 |
| 18 | Howard County, MD | 0.05 |
| 18 | Oakland County, MI | 0.05 |
| 18 | Van Buren County, MI | 0.05 |
| 18 | Harrison County, MS | 0.05 |
| 18 | Lamar County, MS | 0.05 |
| 18 | Newton County, MO | 0.05 |
| 18 | St. Louis city, MO | 0.05 |
| 18 | Bergen County, NJ | 0.05 |
| 18 | Otero County, NM | 0.05 |
| 18 | Valencia County, NM | 0.05 |
| 18 | Madison County, NY | 0.05 |
| 18 | Sullivan County, NY | 0.05 |
| 18 | Warren County, NY | 0.05 |
| 18 | Franklin County, OH | 0.05 |
| 18 | Coos County, OR | 0.05 |
| 18 | Linn County, OR | 0.05 |
| 18 | Multnomah County, OR | 0.05 |
| 18 | Washington County, OR | 0.05 |
| 18 | Lackawanna County, PA | 0.05 |
| 18 | Kent County, RI | 0.05 |
| 18 | Newport County, RI | 0.05 |
| 18 | Berkeley County, SC | 0.05 |
| 18 | Florence County, SC | 0.05 |
| 18 | Loudon County, TN | 0.05 |
| 18 | Hays County, TX | 0.05 |
| 18 | Nacogdoches County, TX | 0.05 |
| 18 | Alexandria city, VA | 0.05 |
| 18 | Clark County, WA | 0.05 |
| 18 | Spokane County, WA | 0.05 |
| 18 | Jefferson County, WI | 0.05 |
| 19 | Matanuska-Susitna Borough, AK | 0.04 |
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