ZIP code 03431 is in Keene (92% of residents), in Cheshire County, New Hampshire. 7.7% of its residents live outside city limits. It is in New Hampshire's 2nd congressional district. Its state senate district is State Senate District 10; its state house districts are State House District Cheshire 01 (19%), State House District Cheshire 03 (19%), State House District Cheshire 04 (18%), State House District Cheshire 02 (18%), State House District Cheshire 07 (18%), State House District Cheshire 10 (3.7%), State House District Cheshire 05 (3.3%) and State House District Cheshire 08 (0.8%).
8 voting precincts overlap ZIP 03431.
Map them, with each precinct's share of the ZIP's residents.
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related_geographies(id="us:zcta:03431")
ZIP 03431 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.