| Business | Phone |
| Mississippi Gulf Coast Conv 942 Beach Dr, Gulfport 39507 | (228) 896-6699 |
| Circuit Clerk 1801 23rd Ave, Gulfport 39501 | (228) 865-4167 |
| Harrison Cnty Circuit Ct Jury 1801 23rd Ave, Gulfport 39501 | (228) 865-0319 |
| Harrison Cnty Circuit Ct Rprtr 1620 23rd Ave, Gulfport 39501 | (228) 865-4016 |
| Harrison Cnty Human Resources 842 Commerce St, Gulfport 39507 | (228) 896-0214 |
| Harrison Cnty Outside Bldgs 10076 Lorraine Rd, Gulfport 39503 | (228) 896-0205 |
| Harrison County Adm 1801 23rd Ave, Gulfport 39501 | (228) 865-4116 |
| Harrison County Animal Control 1801 23rd Ave, Gulfport 39501 | (228) 865-7060 |
| Harrison County Animal Shelter 13756 Washington Ave, Gulfport 39503 | (228) 863-3354 |
| Harrison County Beautification 1801 23rd Ave, Gulfport 39501 | (228) 214-1405 |
| Harrison County Bldgs & Ground 10076 Lorraine Rd, Gulfport 39503 | (228) 896-0207 |
| Harrison County Bridge Dept 842 Commerce St, Gulfport 39507 | (228) 896-0408 |
| Harrison County Building Code 15309 Community Rd # A, Gulfport 39503 | (228) 832-1622 |
| Harrison County Chancery Clerk 1801 23rd Ave, Gulfport 39501 | (228) 865-4036 |
| Harrison County Circuit Clerk 1801 23rd Ave, Gulfport 39501 | (228) 865-4051 |
| Harrison County Coroner 2315 17th St, Gulfport 39501 | (228) 865-4290 |
| Harrison County Data Proc 1801 23rd Ave, Gulfport 39501 | (228) 865-4250 |
| Harrison County Dev Commission 2510 14th St, Gulfport 39501 | (228) 863-1815 |
| Harrison County Development 2510 14th St # 1105, Gulfport 39501 | (228) 863-3807 |
| Harrison County Election Comm 2600 24th Ave, Gulfport 39501 | (228) 865-4007 |
| Harrison County Emergency Comm 15309 Community Rd # B, Gulfport 39503 | (228) 831-0760 |
| Harrison County Employment 2600 24th Ave, Gulfport 39501 | (228) 863-1036 |
| Harrison County Engineering 15309 Community Rd # C, Gulfport 39503 | (228) 832-4891 |
| Harrison County Ext Svc 2315 17th St, Gulfport 39501 | (228) 865-4227 |
| Harrison County Fairgrounds 15321 County Farm Rd, Gulfport 39503 | (228) 832-0080 |
| Harrison County Good Deeds Ctr 14101 Madison, Gulfport 39501 | (228) 867-6552 |
| Harrison County Home Health 15164 Dedeaux Rd, Gulfport 39503 | (228) 867-6115 |
| Harrison County Information 1801 23rd Ave, Gulfport 39501 | (228) 865-4000 |
| Harrison County Insurance Adm 1801 23rd Ave, Gulfport 39501 | (228) 865-4120 |
| Harrison County Maintenance 1801 23rd Ave, Gulfport 39501 | (228) 865-4202 |
| Harrison County Mapping 1801 23rd Ave, Gulfport 39501 | (228) 865-4248 |
| Harrison County Marriage Lcns 1801 23rd Ave, Gulfport 39501 | (228) 865-4049 |
| Harrison County Mosquito Cntrl 10070 Lorraine Rd, Gulfport 39503 | (228) 896-0409 |
| Harrison County Personnel Dept 1801 23rd Ave, Gulfport 39501 | (228) 865-4209 |
| Harrison County Project Impact 1801 23rd Ave, Gulfport 39501 | (228) 865-4191 |
| Harrison County Purchasing 1801 23rd Ave, Gulfport 39501 | (228) 865-4028 |
| Harrison County Rsvp 842 Commerce St, Gulfport 39507 | (228) 896-0412 |
| Harrison County Sand Beach 842 Commerce St, Gulfport 39507 | (228) 896-0055 |
| Harrison County Soil & Water 12238 Ashley Dr, Gulfport 39503 | (228) 831-1647 |
| Harrison County Voter Rgstrtn 1801 23rd Ave, Gulfport 39501 | (228) 865-4005 |
| Harrison County Wastewater 14108 Airport Rd, Gulfport 39503 | (228) 868-8752 |
| Harrison County Wilkes Bridge Lorraine Rd, Gulfport 39503 | (228) 896-4466 |
| Honorable Gaston H Hewes Jr Gulfport 39501 | (228) 865-4025 |
| Honorable Michael H Ward 47 Maples Dr, Gulfport 39507 | (228) 865-7000 |
| Honorable Robin A Midcalf Gulfport 39501 | (228) 865-4109 |