US counties starting with Z
3 counties and county-equivalents, which is under 1% of the 3,144 in the United States. They are spread across 2 states. Sort any column, or select a county for its map and full data.
Every county beginning with Z
| Name | State | Population | Land area | Density | Median income | Seat | FIPS |
|---|---|---|---|---|---|---|---|
| Zapata County | Texas | 13,753 | 998.4 sq mi | 13.8 per sq mi | $39,239 | Zapata | 48505 |
| Zavala County | Texas | 9,037 | 1,297 sq mi | 7.0 per sq mi | $36,749 | Crystal City | 48507 |
| Ziebach County | South Dakota | 2,389 | 1,961 sq mi | 1.2 per sq mi | $53,958 | Dupree | 46137 |
Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Retrieved 30 August 2026.