The city of Timmonsville encompasses the following counties: Florence.
Timmonsville encompasses land area: 2.6 sq mi (6.7 km2), water area: 0.0 sq mi (0.0 km2). The elevation is 144 ft (44 m) above sea level. This equates to a population density of 897/sq mi (346.4/km2). The local time zone is EST (UTC-5).
Local area codes are 843. The Federal Information Processing Standard (FIPS) code for the city is 45-71980, which is used in computer filings when non-government agencies and contractors fulfill government contracts.