When was Calhoun County founded?

Calhoun County was founded in 1908, formed from Lexington County and Orangeburg County, and named after John C. Calhoun.

What is the county seat of Calhoun County?

The county seat of Calhoun County is St. Matthews.

Is there an online parcel map for Calhoun County?

Yes. Calhoun County (SC) GIS publishes a parcel map of 13,904 parcels, rated official here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.

Has Calhoun County's boundary or name changed?

Calhoun County was created in 1908 from Lexington County and Orangeburg County. The Atlas of Historical County Boundaries records no boundary change since.

Is my lot in a flood zone?

We do not have flood maps for Calhoun County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

County · code 45017

Calhoun CountySouth Carolina

Calhoun County is located in South Carolina and was formed in 1908, with St. Matthews as its county seat.

Founded1908
County seatSt. Matthews
Named forJohn C. Calhoun
Land area381 sq mi + 11 sq mi water
Population14,119 2020 Census
Parcels mapped13,904 checked 16 October 2026

Open the free map Click any parcel in Calhoun County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated 19 October 2026

Census outline · seat marked

History

Formed in 1908 from Lexington County and Orangeburg County

An old deed may name a county that no longer exists, or a boundary that has since moved.

Calhoun County was created on February 14, 1908, from parts of Lexington County and Orangeburg County. The county was named after John C. Calhoun.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries.

1908
Calhoun County created Calhoun created from Lexington and Orangeburg.
from Lexington from Orangeburg
14 February 1908 · S.C. Acts 1908, no. 567, sec. 1/pp. 1279-1281

Land and parcels

What the maps cover in Calhoun

Who publishes each layer, how good it is, and when we last checked.

Parcels Official

Lot lines and tax-map numbers for 13,904 parcels from Calhoun County (SC) GIS. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
edited 15 October 2026 · checked 16 October 2026
Address points Missing

No public address points layer found for Calhoun County yet.
Buildings Reference

Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026

Official: from the office that keeps the record
Good enough: a reliable statewide or national copy
Fallback: a guide only; check the official record
Missing: nothing public found yet

People and land

Calhoun by the Census

Population

14,119 2020 Census count

Housing units

7,024 2020 Census count

Land area

381 square miles

Water area

11 square miles

People per sq mi

37 population ÷ land area

Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.

Rules and offices

Calhoun County's official site

We have found the county's site but not its offices yet; start there.

County government

County government
The official website of Calhoun County.
calhouncounty.sc.gov

See your own lot on these maps

Open Calhoun County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.

Open the free map no sign-in Pro early access

Questions

Common questions about Calhoun County

When was Calhoun County founded?: Calhoun County was founded in 1908, formed from Lexington County and Orangeburg County, and named after John C. Calhoun.
What is the county seat of Calhoun County?: The county seat of Calhoun County is St. Matthews.
Is there an online parcel map for Calhoun County?: Yes. Calhoun County (SC) GIS publishes a parcel map of 13,904 parcels, rated official here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Calhoun County's boundary or name changed?: Calhoun County was created in 1908 from Lexington County and Orangeburg County. The Atlas of Historical County Boundaries records no boundary change since.
Is my lot in a flood zone?: We do not have flood maps for Calhoun County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby