Boundary Atlas

Georgia's 4th congressional district (GA-04)

Georgia's 4th congressional district (GA-04) covers parts or all of DeKalb County and Gwinnett County, and 37 ZIP codes (9 wholly inside it). Its 2020 population was 765,137. This is the map in force for the November 3, 2026 election.

765,137residents (2020 Census)
2counties
37ZIP codes
168voting precincts

Who represents GA-04

OfficeMemberContact
U.S. Representative (GA-04)Henry C. "Hank" Johnson, Jr. (D)202-225-1605
U.S. SenatorJon Ossoff (D)202-224-3521 · contact form
U.S. SenatorRaphael G. Warnock (D)202-224-3643 · contact form

Officials serving now (members of Congress until January 3, 2027). Sources: Members of Congress: the @unitedstates project, congress-legislators (CC0).

Counties

CountyShare of the county's residents in GA-04
DeKalb County67%
Gwinnett County26%

ZIP codes

Percentages mark ZIPs only partly in GA-04: the share of that ZIP's residents inside it.

Towns

Lithonia CCD, Norcross CCD, Stone Mountain CCD, Tucker CCD, Chamblee-Doraville CCD, Suwanee-Duluth CCD, Atlanta-Decatur CCD, Lilburn CCD and Lawrenceville CCD.

Get this in your AI agent

Your agent can draw every precinct in GA-04, 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:1304", children_level="precinct", include_districts=True)