ZIP code 46231: Indianapolis city (balance), IN
ZIP code 46231 is in Indianapolis city (balance) (65% of residents) and Plainfield (27%), in Marion County (65%) and Hendricks County (35%), Indiana. 7.8% of its residents live outside city limits. It is in Indiana's 7th congressional district (65%) and Indiana's 4th congressional district (35%). Its state senate districts are State Senate District 35 (62%), State Senate District 24 (35%) and State Senate District 29 (3.0%); its state house districts are State House District 92 (52%), State House District 40 (35%), State House District 91 (13%) and State House District 57 (0.3%).
See it on the mapAll of Indiana
City and county
| City or town | Share of ZIP residents |
|---|---|
| Indianapolis city (balance) | 65% |
| Plainfield | 27% |
| Avon | 0.6% |
| County | Share of ZIP residents |
|---|---|
| Marion County | 65% |
| Hendricks County | 35% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Wayne township | 65% |
| Washington township | 35% |
| Guilford township | 0.3% |
| Decatur township | land only |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Indiana's 7th congressional district (IN-07) | 65% |
| Indiana's 4th congressional district (IN-04) | 35% |
| Indiana's 6th congressional district (IN-06) | land only |
This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.
Members of Congress
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (IN-07) | André Carson (D) | 202-225-4011 | 65% |
| U.S. Representative (IN-04) | James R. Baird (R) | 202-225-5037 | 35% |
| U.S. Representative (IN-06) | Jefferson Shreve (R) | 202-225-3021 | <0.1% |
| U.S. Senator | Jim Banks (R) | 202-224-4814 | statewide |
| U.S. Senator | Todd Young (R) | 202-224-5623 · contact form | statewide |
Members serving now (119th Congress, until January 3, 2027). Source: Members of Congress: the @unitedstates project, congress-legislators (CC0).
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 35 | 62% |
| State Senate District 24 | 35% |
| State Senate District 29 | 3.0% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 92 | 52% |
| State House District 40 | 35% |
| State House District 91 | 13% |
| State House District 57 | 0.3% |
Voting precincts
15 voting precincts overlap ZIP 46231. 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:46231")
ZIP 46231 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.