Boundary Atlas

ZIP code 08620: Yardville, NJ

ZIP code 08620 is in Yardville (44% of residents) and Groveville (20%), in Mercer County (69%) and Burlington County (31%), New Jersey. 36% of its residents live outside city limits. It is in New Jersey's 3rd congressional district. Its state senate districts are State Senate District 14 (69%), State Senate District 8 (21%) and State Senate District 7 (9.3%); its state house districts are Assembly District 14 (69%), Assembly District 08 (21%) and Assembly District 07 (9.3%).

14,633residents (2020 Census)
9.0 sq miland area
2cities and towns
1congressional district
13voting precincts

See it on the mapAll of New Jersey

City and county

City or townShare of ZIP residents
Yardville44%
Groveville20%

CountyShare of ZIP residents
Mercer County69%
Burlington County31%

Town or county subdivisionShare of ZIP residents
Hamilton township69%
Chesterfield township21%
Bordentown township9.3%

Congressional district

Congressional districtShare of ZIP residents
New Jersey's 3rd congressional district (NJ-03)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 1469%
State Senate District 821%
State Senate District 79.3%

State house districtShare of ZIP residents
Assembly District 1469%
Assembly District 0821%
Assembly District 079.3%

Voting precincts

13 voting precincts overlap ZIP 08620. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

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:08620")

ZIP 08620 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.