Census ACS 5-Year · 500 counties
US Counties With Largest Hispanic Population
Counties with the largest Hispanic populations are concentrated along the US-Mexico border in Texas and New Mexico, plus Florida's Miami-Dade region and California's Central Valley. Border counties like Starr, Webb, and Maverick (TX) have populations over 90% Hispanic. These counties have deep cultural ties to Latin America that long predate the modern US-Mexico border, and their demographics shape everything from local elections to bilingual school programs.
Key Findings
- 1Kusilvak Census Area, AK leads with a Hispanic population percentage of 93.8%, followed by Oglala Lakota County, SD (92.3%) and Bethel Census Area, AK (87.8%).
- 2The gap between #1 Kusilvak Census Area, AK and #500 Deer Lodge County, MT (3.9%) is 89.9 percentage points.
- 3The national median across all states is 6.7% (Cascade County, MT at the midpoint).
- 4The top 10 states are: Kusilvak Census Area, AK, Oglala Lakota County, SD, Bethel Census Area, AK, Todd County, SD, Sioux County, ND, Menominee County, WI, Northwest Arctic Borough, AK, Nome Census Area, AK, Dillingham Census Area, AK, McKinley County, NM.
Full Ranking: US Counties With Largest Hispanic Population
Source: Census ACS 5-Year Estimates
Methodology
Rankings are based on American Community Survey (ACS) 5-Year estimates from the US Census Bureau. All 50 states and the District of Columbia are included. The ACS surveys approximately 3.5 million households annually and provides detailed demographic, social, economic, and housing data. 5-Year estimates offer the most reliable data for state-level comparisons by averaging responses over a 60-month period. Percentages may not sum to 100% due to rounding.
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Frequently Asked Questions
Kusilvak Census Area, AK has the highest Hispanic population percentage at 93.8%, according to latest Census ACS data. Oglala Lakota County, SD and Bethel Census Area, AK round out the top three.
Deer Lodge County, MT has the lowest Hispanic population percentage at 3.9%. Koochiching County, MN is second-lowest at 3.9%.
The median across all 500 states is 6.7%. Note that the national median and the state-level median are calculated differently, the state median represents the midpoint when all states are ranked.
This data comes from the American Community Survey (ACS) 5-Year estimates published by the US Census Bureau. The ACS surveys approximately 3.5 million households annually and provides the most comprehensive demographic data available between decennial censuses.
Rankings are based on the latest available Census ACS 5-Year estimates. The Census Bureau releases new ACS data annually. Our data was last updated on April 12, 2026.
Rankings are based on American Community Survey (ACS) 5-Year estimates from the US Census Bureau. All 50 states and the District of Columbia are included. The ACS surveys approximately 3.5 million households annually and provides detailed demographic, social, economic, and housing data. 5-Year estimates offer the most reliable data for state-level comparisons by averaging responses over a 60-month period. Percentages may not sum to 100% due to rounding.