Buying in Union County, South Carolina

Union County at a glance

Union County is one of 46 counties and county-equivalents in South Carolina. Its county seat is Union. County government publishes its offices and parcel tools online. Official county website. Its 2024 Census Bureau population estimate is 26,678 across 514 square miles of land — about 52 people per square mile. In the FBI's 2024 reported-crime file, agencies here reported 990 offenses — 37.11 per 1,000 residents; the breakdown is below.

Records to check before you buy in Union County

• Property record card — the Union County assessor / appraisal office. Pull the parcel's assessed-value history, exemption status, and last sale. This is the file your future tax bill is calculated from, and it shows whether the current owner is enjoying exemptions you will not inherit. County government sits in Union; the official county website is the reliable route to the parcel search and the office directory.
• Deeds & liens — the Union County recorder / land-records office. Read the deed chain, open liens, easements, and plat maps — the file a listing never mentions.
• Official flood determination. Check the exact parcel on FEMA's National Flood Hazard Layer — not the listing site's licensed model. Zone boundaries cut through streets; the house next door can be in a different zone. Union County is the primary county for 4 ZIP codes in the Census Bureau's ZIP-to-county crosswalk — and zone lines ignore every one of them.
• The county's reported-crime record. In the FBI's 2024 file, agencies in Union County reported 990 offenses — 37.11 per 1,000 residents; the largest single category was larceny-theft (624). The crime section below sets that beside the South Carolina county median.
• Registry check. Run the address through South Carolina Sex Offender Registry (South Carolina Law Enforcement Division (SLED)) and note the counts within a mile — then check again the week you close.
• Permits & code history — the Union building department. Open permits, expired permits, and code cases tell you whether the renovation in the photos was ever inspected. County permitting is run out of Union.
• School assignment — the district office, not the listing. Only the district's own boundary lookup confirms which school an address is actually zoned for.

County list, land area and population: U.S. Census Bureau (population: 2024 PEP estimate). County seat and official website: Wikidata (CC0), checked 2026-11-04. Flood determinations: FEMA. Registry: South Carolina.

Reported crime in Union County — FBI 2024

Reported crime in Union County in 2024 was overwhelmingly property crime: agencies logged 990 offenses, of which 858 were property offenses and 132 violent. The total rate is 37.11 per 1,000 residents (violent 494.8, property 3216.1 per 100,000).

Inside South Carolina, the median county in the same file recorded a violent-crime rate of 450 per 100,000 and a property-crime rate of 1,979 per 100,000 (medians computed from the FBI 2024 county file across 46 counties).

The largest reported categories were larceny-theft (624), burglary (150) and aggravated assault (103).

Coverage: 9 of 9 law-enforcement agencies assigned to this county reported at least one month of 2024 offense data to the FBI; 7 reported all 12 months. Counts are reported offenses only (FBI Return A / Arson master files), assigned whole to each agency's primary county; they are not adjusted for non-reporting agencies.

These are offenses reported to law enforcement — not convictions, and not a verdict on any street or address. A CurbFacts report pairs this county record with the ZIP-level picture for the specific address you are buying.

Source: FBI Crime Data Explorer, UCR Return A + Arson master files, data year 2024 (pulled 2026-11-04).

The South Carolina rules that apply in Union County

Traps researched for South Carolina buyers: Point-of-sale reassessment (assessable transfer of interest); 4% legal residence rate and the January deadlines.

Read the full South Carolina guide — disclosure standard, tax math, registry and flood

More South Carolina counties

All South Carolina counties · South Carolina buyer guide