ZIP code 30004 is in Milton (58% of residents) and Alpharetta (15%), in Fulton County (74%), Forsyth County (21%) and Cherokee County (4.8%), Georgia. 27% of its residents live outside city limits. It is in Georgia's 7th congressional district. Its state senate districts are State Senate District 21 (79%) and State Senate District 27 (21%); its state house districts are State House District 47 (61%), State House District 24 (21%), State House District 49 (16%) and State House District 21 (1.3%).
28 voting precincts overlap ZIP 30004.
Map them, with each precinct's share of the ZIP's residents.
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Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:zcta:30004")
ZIP 30004 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code;
PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.