Union
Source:
Tennessee
Union is a sparsely populated county in Tennessee with 3 ZIP codes, 15,600 people, and below-median household income among US counties. All data is sourced from the U.S. Census Bureau American Community Survey (ACS) 2023 5-Year Estimates.
National county placement
According to ACS 5-Year Estimates, Union, TN sits among US counties with a below-median household income, on a sparsely populated county population base, across a handful of delivery areas.
- 40th pct
- household income vs 3,210 US counties
- 15,600
- combined ZIP population
- 3
- USPS ZIP codes covered
- $63,707
- avg ZIP median income
Income percentile ranks this county's average ZIP median household income against 3,210 US counties with ACS income on at least one ZIP.
Union lands in the national county income distribution as below-median household income on sparsely populated county footing (FIPS 47173, 3 ZIPs, combined population 15,600). On this short ZIP list the county page is mainly the FIPS bridge - household ACS fields live on the primary ZIP.
Below-median income with few ZIPs: start cost-of-living reads on the primary code (37807), not the county mean. This page exists to join FIPS 47173 to HUD/FBI tables once the ZIP is chosen.
Population sits in the five-to-twenty-five thousand band with few ZIPs - still ZIP-first for household fields, but the county seat ZIP (usually the densest row) is worth a second glance before the FIPS overlays.
Within Tennessee, McMinn is the closest lower-income county and Madison the closest higher-income county by average ZIP household income. Their 6 and 7 ZIP footprints are the immediate statewide comparison set for Union. Use those locations as statewide context before treating the county average as a local-market answer.
3
Total ZIPs
15,600
Total Population
ZIP Codes in Union
Side-by-side: Compare 37807 vs 37779 →
Frequently Asked Questions
What is the population of Union?
Union has a total population of 15,600 across 3 ZIP codes, based on U.S. Census Bureau ACS 2023 data.
What ZIP codes are in Union?
Union includes 3 ZIP codes: 37807, 37779, 37866.