| Business | Phone |
| Community Srvs Branch Environm 350 Montevue Ln, Frederick 21702 | (301) 694-1717 |
| Developmental Ctr-Dental Clnc 350 Montevue Ln, Frederick 21702 | (301) 694-1041 |
| Developmental Ctr-Occupational 350 Montevue Ln, Frederick 21702 | (301) 694-1608 |
| Federick Cnty Family Prtnrshp 7630 Hayward Rd # B, Frederick 21702 | (301) 846-2206 |
| Fountain Rock Nature Center Frederick 21701 | (301) 898-1460 |
| Frederic Cnty Human Relations 12 E Church St, Frederick 21701 | (301) 694-1070 |
| Frederick Child Advocacy Ctr 520 N Market St, Frederick 21701 | (301) 694-1762 |
| Frederick Cnty Alt Sentencing 100 W Patrick St, Frederick 21701 | (301) 694-1928 |
| Frederick Cnty Consumer Prtctn Frederick 21701 | (301) 694-1071 |
| Frederick Cnty Family First 520 N Market St, Frederick 21701 | (301) 846-2277 |
| Frederick Cnty Meals On Wheels 520 N Market St, Frederick 21701 | (301) 694-1604 |
| Frederick Cnty Permit Inspctns Frederick 21701 | (301) 694-2028 |
| Frederick County Accounting 12 E Church St, Frederick 21701 | (301) 694-1116 |
| Frederick County Agricultural 12 E Church St, Frederick 21701 | (301) 694-2513 |
| Frederick County Alcohol Bev Frederick 21701 | (301) 694-1158 |
| Frederick County Animal Cntrl 1832 Rosemont Ave, Frederick 21702 | (301) 694-1546 |
| Frederick County Audit Dept 8 E 2nd St, Frederick 21701 | (301) 694-1675 |
| Frederick County Bldg Mntnc 430 Pine Ave, Frederick 21701 | (301) 694-1573 |
| Frederick County Budget Office 12 E Church St, Frederick 21701 | (301) 694-1753 |
| Frederick County Business Ctr 5340 Spectrum Dr # A, Frederick 21703 | (301) 846-2255 |
| Frederick County Citizens Svc 520 N Market St, Frederick 21701 | (301) 694-1065 |
| Frederick County Commissioners 12 E Church St, Frederick 21701 | (301) 694-1100 |
| Frederick County Courthouse 100 W Patrick St, Frederick 21701 | (301) 694-2570 |
| Frederick County Custodial Frederick 21701 | (301) 694-1073 |
| Frederick County Development 12 E Church St, Frederick 21701 | (301) 694-1134 |
| Frederick County Election Brd 12 E Church St, Frederick 21701 | (301) 694-1005 |
| Frederick County Emerg Comms 110 Airport Dr E, Frederick 21701 | (301) 694-1603 |
| Frederick County Employment 5340 Spectrum Dr # A, Frederick 21703 | (301) 694-2180 |
| Frederick County Engineering 118 N Market St, Frederick 21701 | (301) 694-1688 |
| Frederick County Extension Svc 330 Montevue Ln, Frederick 21702 | (301) 694-1594 |
| Frederick County Finance Div Frederick 21701 | (301) 694-1067 |
| Frederick County Fleet Svc 331 Montevue Ln, Frederick 21702 | (301) 694-1814 |
| Frederick County Housing Dev 520 N Market St, Frederick 21701 | (301) 694-1061 |
| Frederick County Hwy Operation 331 Montevue Ln, Frederick 21702 | (301) 694-1555 |
| Frederick County Info Tech 1117 E Chuch St, Frederick 21701 | (301) 694-1010 |
| Frederick County Information 12 E Church St, Frederick 21701 | (301) 694-9000 |
| Frederick County Landfill 9031 Reichs Ford Rd, Frederick 21704 | (301) 694-1848 |
| Frederick County Life Safety 12 E Church St, Frederick 21701 | (301) 631-3463 |
| Frederick County Liquor Lcns 8 E 2nd St, Frederick 21701 | (301) 694-1156 |
| Frederick County Manager Frederick 21701 | (301) 694-1103 |
| Frederick County Mgmt Svc 12 E Church St, Frederick 21701 | (301) 694-1039 |
| Frederick County Permitting 12 E Church St, Frederick 21701 | (301) 694-1172 |
| Frederick County Purchasing 12 E Church St # 1, Frederick 21701 | (301) 694-1067 |
| Frederick County Recycling 9031 Reichs Ford Rd, Frederick 21704 | (301) 696-2960 |
| Frederick County Substance 300 Scholls Ln # B, Frederick 21701 | (301) 694-1775 |
| Frederick County Substance 350 Montevue Ln, Frederick 21702 | (301) 694-1775 |
| Frederick County Warehouse 341 Montevue Ln, Frederick 21702 | (301) 694-1068 |
| Frederick County Water Billing 8 E 2nd St, Frederick 21701 | (301) 694-1126 |
| Frederick County Weed Control 330 Montevue Ln, Frederick 21702 | (301) 694-1586 |
| Frederick County Women Comm Frederick 21701 | (301) 694-1066 |
| Frederick Voter Registration 12 E Church St, Frederick 21701 | (301) 694-1006 |
| Health Department-Aids Info 350 Montevue Ln, Frederick 21702 | (301) 631-3342 |
| Health Department-Nursing 350 Montevue Ln, Frederick 21702 | (301) 694-1733 |
| Housing-Livability Code 520 N Market St, Frederick 21701 | (301) 694-1023 |
| Housing-Section 8 Coordinator 520 N Market St, Frederick 21701 | (301) 694-1062 |
| Independent Hose Co 310 Baughmans Ln, Frederick 21702 | (301) 694-1720 |
| Jefferson Fire Co Frederick 21702 | (301) 473-5150 |
| Junior Fire Co Frederick 21701 | (301) 846-2286 |
| Lewistown Dist Vol Fire Co Frederick 21701 | (301) 898-9988 |
| Literacy Council Of Frederick 110 E Patrick St, Frederick 21701 | (301) 694-2066 |
| Montevue Home 355 Montevue Ln, Frederick 21702 | (301) 694-1582 |
| Nursing-Health Kids 350 Montevue Ln, Frederick 21702 | (301) 694-1745 |
| Office For Children & Families 520 N Market St, Frederick 21701 | (301) 631-3533 |
| Religious Coalition-Emergency 420 E Patrick St # 150b, Frederick 21701 | (301) 631-2670 |
| Scott Key Ctr 1050 Rocky Springs Rd, Frederick 21702 | (301) 694-1600 |
| Social Services-Day Care 100 E All Saints St, Frederick 21701 | (301) 631-2687 |
| Social Services-Family & Adult 100 E All Saints St, Frederick 21701 | (301) 631-2635 |
| Social Services-Fuel Asstnc 100 E All Saints St, Frederick 21701 | (301) 694-2410 |
| State Department-Assessments 12 E Church St, Frederick 21701 | (301) 694-2040 |
| Walkersville Vol Fire Co 79 Frederick Ave, Frederick 21701 | (301) 898-9397 |