Union

Source:

South Carolina

Union is a smaller county in South Carolina with 5 ZIP codes, 27,897 people, and one of the lowest household incomes among US counties 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, SC sits among US counties with one of the lowest household incomes among US counties, on a smaller county population base, across a compact ZIP cluster.

7th pct
household income vs 3,210 US counties
27,897
combined ZIP population
5
USPS ZIP codes covered
$45,214
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 one of the lowest household incomes among US counties on smaller county footing (FIPS 45087, 5 ZIPs, combined population 27,897). Sort the ZIP table by population before treating the county mean as uniform.

Lower household-income footing across 5 ZIPs (combined population 27,897). Cost-of-living reads should start from the densest ZIP rather than the county mean - sparse codes can dominate land area while a small urban ZIP carries most residents.

Save two ZIPs from the table into your shortlist, then open a compare link - that is the return path a static county summary cannot replace. All figures here come from Census ACS 2023 5-Year Estimates and USPS ZCTA files.

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5

Total ZIPs

27,897

Total Population

ZIP Codes in Union

Side-by-side: Compare 29379 vs 29353 →

ZIP Code City Population Density
29379 Union 19,186 29
29353 Jonesville 4,174 17
29321 Buffalo 2,596 26
29031 Carlisle 1,349 4
29364 Lockhart 592 73

Frequently Asked Questions

What is the population of Union?

Union has a total population of 27,897 across 5 ZIP codes, based on U.S. Census Bureau ACS 2023 data.

What ZIP codes are in Union?

Union includes 5 ZIP codes: 29379, 29353, 29321, 29031, 29364.

Union's figures come from Census ACS 5-Year Estimates (2023), mapped to ZIP codes via the HUD USPS Crosswalk. PlainZIP is not affiliated with the U.S. Census Bureau or any government agency. See our methodology for details.

Related

Compare any two ZIPs side by side

Read our methodology : how this data is sourced, computed, and verified.