Union County land: flood and parcels
18,731 parcels
On the county tax roll
- In a FEMA flood zone7.9%special flood hazard area
Free account: 25 parcel cards a day on the map, with sale history, road access and elevation. Get started free
No zoning layer for Union County yet. Zoning here is set town by town.
Around Union County
Parcels to start with
Towns in Union County
- Union4,598 parcels
- Monarch Mill1,173 parcels
- Buffalo795 parcels
- Jonesville610 parcels
- Carlisle416 parcels
- Lockhart312 parcels
Flood zones and wetlands
Recorded flood claims in Union County
Fewer than 10 insured flood claims were recorded in Union County from 1978 to Sep 2026. FEMA counts claims on buildings with NFIP flood insurance, so land without an insured building never shows here.
This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data.
Farmland rent in Union County
Cropland in Union County rents for about $15 an acre a year (USDA, 2026).
- Cropland rent
- $15 an acrenon-irrigated, 2026; $11.50 in 2022
No rent-to-price figure for South Carolina yet.
Rent: USDA NASS county cash rents survey, 2026 (released August 21, 2026), public domain. Farmland rent in every South Carolina county →
What land here is worth and produces
Published land values, crops, forest and farm programs for Union County
- Farmland value (Census of Agriculture)
- $3,814 an acreAverage value of land and buildings on the county's farms, 2022 · USDA NASS 2022 Census of Agriculture
- Farms
- 313 farms on 55,044 acresAverage 176 acres, median 80; 10,105 acres of cropland; 22,254 of pasture; 27,636 of woodland, 2022 · USDA NASS 2022 Census of Agriculture
- What the farms sell
- poultry and eggs 77% · cattle 12%Share of the $21.7 million of farm products sold in 2022 · USDA NASS 2022 Census of Agriculture
- Land cover
- grass, hay and pasture 17% · forest 69% · shrubland 4% · wetlands 2% · developed 7%Share of the county's 330,400 acres of land and water, 2025 · USDA NASS Cropland Data Layer 2025, classified from satellite imagery
- Forest
- 227,699 acres, 69% of the countyEvergreen 50%, deciduous 37%, mixed 13% of the forest; woody wetlands counted apart · USDA NASS Cropland Data Layer 2025, classified from satellite imagery
- Conservation Reserve (CRP)
- 30 acres, average $14 an acre a yearAcres under contract at the end of fiscal year 2025, paid a yearly rent to keep them in grass or trees instead of crops; a new contract's county average soil rental rate is $27 an acre for 2026 · USDA FSA Conservation Reserve Program statistics
- Timber price (pine sawtimber)
- $18.40 a tonStumpage, statewide average stumpage, 4th Quarter 2025; pine pulpwood $5.00; hardwood sawtimber $17.40; hardwood pulpwood $6.30 · Stumpage Price Trends in South Carolina, Clemson Extension Forestry and Wildlife (Puskar Khanal), Timber Mart-South data published with permission
- Farm and forest tax program
- Agricultural use valuationFarm and timber land is valued on its agricultural use and assessed at 4% for individuals (6% for most corporations); a change of use brings rollback taxes for the current and three prior years. · S.C. Code 12-43-220(d)
Sources: USDA NASS 2022 Census of Agriculture (2022) · USDA NASS Cropland Data Layer (2025) · USDA FSA Conservation Reserve Program statistics (2025) · Stumpage Price Trends in South Carolina, 4th Quarter 2025 · Agricultural use valuation. Published survey and census figures for the area, not an appraisal of any parcel.
People and new homes in Union County
- Population26,799July 2025 estimate, −1.4% since 2020
- Median household income$41,6212020–2024 average, ±$3,477
- New homes permitted3732025, 89 single-family; 42 in 2021
- Permitted so far in 2026236Jan–Aug, against 56 a year earlier
U.S. Census Bureau, Population Estimates Program, Vintage 2025 (May 2026); U.S. Census Bureau, American Community Survey 2020-2024 5-year (B19013) (Jan 2026); U.S. Census Bureau, Building Permits Survey (Sep 2026).
Typical lot sizeThe typical lot, from the roll
The median parcel in Union County is 1.08 acres (18,731 parcels with a size).
Acres from each parcel's own outline (the state's parcel layer carries no deeded acres). Condominium units that share one point (each carrying the whole complex's acres) are left out of the lot sizes.
Land parcels in Union CountyFarm and timber parcels to start with
- 799.1 acres of land
- 778.6 acres of land
- 745.5 acres of land
- 733.3 acres of land
- 731.1 acres of land
- 727.7 acres of land
- 717.0 acres of land
- 675.6 acres of land
- 674.8 acres of land
Land tracts of 5 acres or more, each with its own page of public land facts.
Questions about Union County landAnswers from the public records
How many parcels are in Union County, SC?
18,731 parcels on the SC Revenue and Fiscal Affairs Office statewide parcel layer for Union County (last edited Sep 2026, pulled Oct 2026), covering 321,401 acres.
Is vacancy verified in Union County, SC?
Union County's parcels come from the state's parcel layer, which carries no land-use class or building record, so we don't call any Union County parcel vacant.
What is the typical lot size in Union County?
The median parcel is 1.08 acres, from 18,731 parcels with a recorded size.
How much of Union County is in a flood zone?
7.9% of parcels are in a FEMA special flood hazard area (National Flood Hazard Layer, as of Sep 2026). Check each parcel's own flood line before you buy.
Are there wetlands in Union County?
0.9% of parcels are a quarter or more wetland on the USFWS National Wetlands Inventory, a mapping guide, not a legal delineation.
Are there land prices for Union County?
No land prices for Union County yet. Area prices print only where South Carolina's own price test passed for the county, and it has not for Union County.
How many people live in Union County?
About 26,799 (Census estimate for July 1, 2025), −1.4% since 2020.
How many new homes are being built in Union County?
Building permits authorized 373 new housing units in 2025 and 236 from January to Aug 2026 (against 56 a year earlier) (Census Building Permits Survey).
Where does this data come from?
Parcels: SC Revenue and Fiscal Affairs Office statewide parcel layer. Flood: FEMA National Flood Hazard Layer. Wetlands: USFWS National Wetlands Inventory. Towns: U.S. Census places. Every figure is counted from those files on our map.
About these numbersSources, dates and how these figures are built
What Groundwork can price in Union County
Facts only: no price estimate on any parcel here.
Land sale prices
This county publishes no bulk sale prices we may use, and South Carolina has no statewide sale-price file.
Sources
Parcels: SC Revenue and Fiscal Affairs Office statewide parcel layer (layer last edited Sep 2026, pulled Oct 2026); flood: FEMA National Flood Hazard Layer (as of Sep 2026); wetlands: USFWS National Wetlands Inventory (as of Oct 2026); counted on our map built Oct 2026.