Maryland's 1st congressional district (MD-01)
Maryland's 1st congressional district (MD-01) covers parts or all of 11 counties, including Caroline County, Cecil County, Dorchester County, Harford County, Kent County and Queen Anne's County, and 147 ZIP codes (134 wholly inside it). Its 2020 population was 772,748. This is the map in force for the November 3, 2026 election.
Who represents MD-01
| Office | Member | Contact |
|---|---|---|
| U.S. Representative (MD-01) | Andy Harris (R) | 202-225-5311 |
| U.S. Senator | Angela D. Alsobrooks (D) | 202-224-4524 · contact form |
| U.S. Senator | Chris Van Hollen (D) | 202-224-4654 · contact form |
Officials serving now (members of Congress until January 3, 2027). Sources: Members of Congress: the @unitedstates project, congress-legislators (CC0).
Counties
| County | Share of the county's residents in MD-01 |
|---|---|
| Caroline County | 100% |
| Cecil County | 100% |
| Dorchester County | 100% |
| Harford County | 100% |
| Kent County | 100% |
| Queen Anne's County | 100% |
| Somerset County | 100% |
| Talbot County | 100% |
| Wicomico County | 100% |
| Worcester County | 100% |
| Baltimore County | 6.4% |
ZIP codes
Percentages mark ZIPs only partly in MD-01: the share of that ZIP's residents inside it.
- 19973 (1.4%)
- 21001
- 21005
- 21009
- 21010
- 21013
- 21014
- 21015
- 21017
- 21028
- 21034
- 21040
- 21047
- 21050
- 21051
- 21053 (9.3%)
- 21057 (100%)
- 21078
- 21082
- 21084
- 21085
- 21087
- 21105
- 21111 (59%)
- 21120 (41%)
- 21128 (84%)
- 21130
- 21131 (67%)
- 21132
- 21154
- 21156
- 21160
- 21161
- 21162 (88%)
- 21220 (19%)
- 21236 (8.2%)
- 21286 (<0.1%)
- 21601
- 21607
- 21610
- 21612
- 21613
- 21617
- 21619
- 21620
- 21622
- 21623
- 21624
- 21625
- 21626
- 21627
- 21628
- 21629
- 21631
- 21632
- 21634
- 21635
- 21636
- 21638
- 21639
- 21640
- 21641
- 21643
- 21644
- 21645
- 21647
- 21648
- 21649
- 21650
- 21651
- 21652
- 21653
- 21654
- 21655
- 21657
- 21658
- 21659
- 21660
- 21661
- 21662
- 21663
- 21664
- 21665
- 21666
- 21667
- 21668
- 21669
- 21671
- 21672
- 21673
- 21675
- 21676
- 21677
- 21678
- 21679
- 21801
- 21804
- 21810
- 21811
- 21813
- 21814
- 21817
- 21821
- 21822
- 21824
- 21826
- 21829
- 21830
- 21835
- 21837
- 21838
- 21840
- 21841
- 21842
- 21849
- 21850
- 21851
- 21853
- 21856
- 21861
- 21862
- 21863
- 21864
- 21865
- 21866
- 21867
- 21869
- 21871
- 21872
- 21874 (99%)
- 21875
- 21890
- 21901
- 21902
- 21903
- 21904
- 21911
- 21912 (99%)
- 21913
- 21914
- 21915
- 21917
- 21918
- 21919
- 21920
- 21921
- 21930
Towns
District 1, Abingdon, District 1, Barren Creek, District 1, Cecilton, District 1, Dixon, District 1, Easton, District 1, Fork, District 1, Henderson, District 1, Massey, District 1, Southern, District 1, West Princess Anne, District 10, Sharptown, District 10, Smith Island, District 10, Straits, District 11, Dames Quarter, District 11, Delmar, District 11, Drawbridge, District 12, Asbury, District 12, Williamsburg, District 13, Bucktown, District 13, Camden, District 13, Westover, District 14, Deal Island, District 14, Linkwood, District 14, Willards, District 15, East Princess Anne, District 15, Hebron, District 15, Hurlock, District 16, Fruitland, District 16, Madison, District 17, Salem, District 17, Westside, District 18, Elliott, District 2, Central, District 2, Chesapeake City, District 2, Church Hill, District 2, East New Market, District 2, Greensboro, District 2, Halls Cross Roads, District 2, Kennedyville and District 2, Quantico and others.
Get this in your AI agent
Your agent can draw every precinct in MD-01, or list them with population shares (related_geographies). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
get_boundaries(id="us:congressional_district:2401", children_level="precinct", include_districts=True)