Demographics & People — Petersburg, Texas
Population Overview
| Population (Census) | 787 |
| Estimated 2026 | ~500 |
| Median Age | 48.2 |
| Total Households | 354 |
| Family Households | 186 |
| Average Household Size | 2.22 |
| Diversity Index | N/A (N/A) |
Race & Ethnicity
| White | 514 |
| Black or African American | 0 |
| Asian | 0 |
| Hispanic or Latino | 528 |
Heritage & Ancestry
| Group | Count |
| Hispanic: Hispanic or Latino | 604 |
| Hispanic: Mexican | 595 |
| Other groups | 526 |
| Unclassified or not reported | 249 |
| Irish | 35 |
| German | 32 |
| English | 15 |
| Hispanic: Central American | 9 |
| Hispanic: Guatemalan | 9 |
| Dutch | 8 |
Language
| English Only | 312 |
| Spanish | 411 |
| Population 5+ | 723 |
Veterans
| Veterans | 28 |
| Population 18+ | 629 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Petersburg, Texas.