Maryland’s 1st Congressional District is represented by Andy Harris (R) in the U.S. House of Representatives. The district is one of Maryland’s seats in the 435-member House of Representatives. After the 2020 Census, the average congressional district had 761,169 people, according to the U.S. Census Bureau, and these district boundaries were drawn during the redistricting cycle that followed.
Congressional representatives serve two-year terms and face election every even-numbered year. The next election for this seat will take place on November 3, 2026.
Population
776,906
Median Household Income
$92,720
Population and income: U.S. Census Bureau, American Community Survey 5-year estimates for 2019 to 2023, for district lines in effect on January 1, 2023.
Partisan Lean
R+17
2024 presidential margin (Trump vs Harris). Source: The Downballot.
District boundary, 119th Congress. Boundary data: U.S. Census Bureau TIGERweb. Map tiles: OpenStreetMap.
Andy Harris and Maryland's 1st Congressional District
Andy Harris, a member of the Republican Party, represents Maryland's 1st Congressional District and has held the seat since January 5, 2011. The boundary map for the district is above and the ZIP codes it covers are listed further down this page.
Committee assignments: House Committee on Appropriations.
The current term ends January 3, 2027. The seat is on the ballot on Tuesday, November 3, 2026. Washington office phone: 202-225-5311. Official site: harris.house.gov.
Current Representative
Rep. Andy Harris (R)
119th Congress • Republican • Representing this district since January 5, 2011
Andy Harris currently represents Maryland’s 1st Congressional District as a member of the Republican Party in the United States House of Representatives. The representative’s district office helps constituents with federal casework, such as Social Security claims and veterans’ benefits.
2026 Election
On the ballot November 3, 2026
- Dan Schwartz, Democratic
- Andy Harris, Republican Incumbent
Source: Maryland State Board of Elections, 2026 general election candidate list, checked September 26, 2026. Write-in candidates are not listed.
Key dates for November 3, 2026
| Register by mail | Tuesday, October 13 Application must be postmarked by this date. |
|---|---|
| Register online | Tuesday, October 13 |
| Register in person | Through Election Day, November 3 |
| Same-day registration | After October 13, register and vote in person during early voting or on Election Day with proof of residence. |
| Early in-person voting | October 22 to October 29 |
| Request a mail ballot | Tuesday, October 27 Request by October 27 for a ballot by mail, or by October 30 for a ballot by internet. |
| Return a mail ballot | Postmarked by November 3 and received by 10 a.m. on November 13, or placed in a drop box by 8 p.m. on November 3. |
| Election Day | Tuesday, November 3, 2026 |
Check your registration with the Maryland voter lookup. Dates come from the Maryland election office and were checked September 26, 2026. States can change deadlines, so confirm with your election office before you act.
Polling places in Maryland are open 7 a.m. to 8 p.m., local time. Confirm your registration and polling place on the official federal voter page for Maryland: vote.gov.
What is on the ballot nationally on November 3, 2026
Contact Your Representative
Washington Office
1536 Longworth House Office Building
Washington, DC 20515
Phone: (202) 225-5311
Online
Committee Assignments
About This District
The district spans 11 counties in Maryland, including Harford, Caroline, Somerset, Wicomico, and Worcester, and others. Its largest cities are Salisbury (about 33,000), Easton (about 17,000), Aberdeen (about 16,000), and Elkton (about 16,000).
Learn more about congressional districts
- What is a congressional district?
- What does a U.S. Representative do?
- What is gerrymandering?
- How congressional redistricting works
Frequently Asked Questions
Who represents Maryland's 1st Congressional District?
Andy Harris (R) represents Maryland's 1st Congressional District in the U.S. House of Representatives.
What political party is Andy Harris a member of?
Andy Harris is a member of the Republican Party.
How can I contact Andy Harris?
You can reach Andy Harris by phone at 202-225-5311 or through their official website at https://harris.house.gov.
When does Andy Harris's current term end?
Andy Harris's current term in the U.S. House of Representatives ends on January 3, 2027.
Where is Maryland's 1st Congressional District?
Maryland's 1st Congressional District is located in the state of Maryland and is one of the 435 voting congressional districts in the U.S. House of Representatives.
What district does Andy Harris represent?
Andy Harris has represented Maryland's 1st Congressional District since January 5, 2011. The boundary map for the district is on this page.
Where can I see a map of Andy Harris's district?
The boundary map for Maryland's 1st Congressional District is on this page. It is drawn from U.S. Census Bureau TIGERweb boundary files for the 119th Congress.
What committees is Andy Harris on?
Andy Harris sits on House Committee on Appropriations. Committee assignments come from the Clerk of the House MemberData file.
Is Andy Harris still in Congress?
This site shows Andy Harris holding Maryland's 1st Congressional District, checked against the Clerk of the House member list. All 435 House seats are on the ballot on November 3, 2026, so the answer can change with that election.
Nearby Districts in Maryland
ZIP Codes in Maryland's 1st Congressional District
This congressional district contains 150 ZIP codes. The most common 10 are shown below; expand the full list to see every ZIP in the district.
17 of these ZIP codes also extend into another Maryland district, so a ZIP code here does not always identify a single representative. Examples include 21013 (also in the 2nd), 21053 (also in the 2nd), 21057 (also in the 2nd), 21087 (also in the 2nd), 21105 (also in the 2nd), 21111 (also in the 2nd), 21120 (also in the 2nd), 21128 (also in the 2nd).
- 19973
- 21001
- 21005
- 21009
- 21010
- 21013
- 21014
- 21015
- 21017
- 21028
View all 150 ZIP codes in this district
- 19973
- 21001
- 21005
- 21009
- 21010
- 21013
- 21014
- 21015
- 21017
- 21028
- 21034
- 21040
- 21047
- 21050
- 21051
- 21053
- 21057
- 21078
- 21082
- 21084
- 21085
- 21087
- 21105
- 21111
- 21120
- 21128
- 21130
- 21131
- 21132
- 21152
- 21154
- 21156
- 21160
- 21161
- 21162
- 21220
- 21234
- 21236
- 21237
- 21286
- 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
- 21875
- 21890
- 21901
- 21902
- 21903
- 21904
- 21911
- 21912
- 21913
- 21914
- 21915
- 21917
- 21918
- 21919
- 21920
- 21921
- 21930
ZIP-to-district boundaries sourced from the U.S. Census Bureau's 2024-07-30 Block Equivalency File for the 119th Congress. ZCTAs (ZIP Code Tabulation Areas) approximate USPS delivery ZIPs.
U.S. Senators for this state: Chris Van Hollen (D), Angela D. Alsobrooks (D)
Local surveillance camera contracts
Automated license plate reader contracts are approved locally, by city councils and county boards, not by Congress. These places in this district have a contract record documented from public sources:
Records compiled by Who Approved This, an independent public-records project. Approval dates, amounts, and end dates are cited to council agendas, minutes, and signed contracts.
Place list rebuilt from the Who Approved This public export on September 26, 2026.
Last updated September 27, 2026.
Data last checked September 26, 2026.
See how this district compares with another using Compare Districts.