Highest Mexican population share, US counties · 2020
US counties ranked by the share of all residents who are Mexican origin (2023 American Community Survey). A concentration measure: Mexican residents as a percentage of total population. Kenedy County, Texas leads at 96.7%. 3,090 counties qualify in total. Texas carries 23 of the top 25 entries.
UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES
Frequently asked
Which county has the highest mexican share?
Kenedy County, Texas ranks #1 with 96.7% (2020 American Community Survey).
What are the top 5 counties by mexican share?
Kenedy County, Texas, Starr County, Texas, Zavala County, Texas, Maverick County, Texas, Webb County, Texas.
How many counties are in this ranking?
3,090 counties qualify after filtering for population minimums and data availability. The ranking covers 2020 ACS 5-year data.
How is mexican share measured?
Share of all residents who are Mexican origin (Hispanic origin, ACS detailed tables). Source: US Census Bureau, American Community Survey 5-year estimates (2020).