Jefferson County Texas Population 2024. Discover jefferson county, tx’s population & how it has changed over time. Quickfacts provides statistics for all states and counties, and for cities and towns with a population of 5,000 or more.

Jefferson county, texas has 876.7 square miles of land area and is the 174th largest county in texas by total area. Between 2021 and 2022 the population of jefferson county, tx declined from.