The city of Siloam Springs encompasses the following counties: Benton.
Siloam Springs encompasses land area: 10.6 sq mi (27.3 km2), water area: 0 sq mi (0 km2). The elevation is 1,132 ft (345 m) above sea level. This equates to a population density of 1,022.9/sq mi (397.2/km2). The local time zone is Central (CST) (UTC-6).
Local area codes are 479. The Federal Information Processing Standard (FIPS) code for the city is 05-64370, which is used in computer filings when non-government agencies and contractors fulfill government contracts.