Town Hall Address 623 Garrison Ave. Fort Smith, AR 72901 United States- Sebastian County Website https://www.fortsmithar.gov Fire District 479-783-4052 200 North 5th Fort Smith, AR 72901 United States Town Clerk 479-784-2208 623 Garrison Ave., Room 303 Fort Smith, AR 72901 United States Tax Collector 479-784-2286 623 Garrison Ave., Room 512 Fort Smith, AR 72901 United States County Sebastian