Illinois's 13th congressional district (IL-13)
Illinois's 13th congressional district (IL-13) covers parts or all of 7 counties, including Macoupin County, Sangamon County, Champaign County, Madison County, St. Clair County and Piatt County, and 116 ZIP codes (48 wholly inside it). Its 2020 population was 753,677. This is the map in force for the November 3, 2026 election.
Who represents IL-13
| Office | Member | Contact |
|---|---|---|
| U.S. Representative (IL-13) | Nikki Budzinski (D) | 202-225-2371 |
| U.S. Senator | Richard J. Durbin (D) | 202-224-2152 · contact form |
| U.S. Senator | Tammy Duckworth (D) | 202-224-2854 · contact form |
Officials serving now (members of Congress until January 3, 2027). Sources: Members of Congress: the @unitedstates project, congress-legislators (CC0).
Counties
| County | Share of the county's residents in IL-13 |
|---|---|
| Macoupin County | 100% |
| Sangamon County | 76% |
| Champaign County | 73% |
| Madison County | 68% |
| St. Clair County | 64% |
| Piatt County | 62% |
| Macon County | 51% |
ZIP codes
Percentages mark ZIPs only partly in IL-13: the share of that ZIP's residents inside it.
- 61801
- 61802 (94%)
- 61813 (97%)
- 61815
- 61818 (97%)
- 61820
- 61821
- 61822 (97%)
- 61830 (92%)
- 61851
- 61855
- 61856 (83%)
- 61872 (11%)
- 61874
- 61875 (64%)
- 61880 (2.1%)
- 61884 (1.9%)
- 61929 (2.5%)
- 62002 (80%)
- 62009
- 62010
- 62012 (54%)
- 62014
- 62018
- 62021 (80%)
- 62023
- 62024
- 62025 (79%)
- 62026
- 62033
- 62034 (100%)
- 62035 (7.1%)
- 62040
- 62044 (5.3%)
- 62048
- 62056 (3.5%)
- 62059
- 62060
- 62062 (65%)
- 62063 (67%)
- 62067 (100%)
- 62069 (100%)
- 62074 (9.2%)
- 62079 (64%)
- 62084
- 62085
- 62087
- 62088 (90%)
- 62090
- 62093
- 62095
- 62097 (1.1%)
- 62201
- 62203
- 62204
- 62205
- 62206
- 62207
- 62208 (90%)
- 62220 (90%)
- 62221 (74%)
- 62223 (81%)
- 62226 (100%)
- 62232 (57%)
- 62234 (74%)
- 62236 (0.3%)
- 62239 (94%)
- 62240 (72%)
- 62260 (0.1%)
- 62269 (29%)
- 62501 (41%)
- 62515 (84%)
- 62520 (83%)
- 62521 (38%)
- 62522 (57%)
- 62523
- 62526 (71%)
- 62530
- 62535
- 62536
- 62537
- 62539
- 62543 (1.1%)
- 62545 (83%)
- 62548 (<0.1%)
- 62551
- 62554 (98%)
- 62558 (95%)
- 62560 (2.9%)
- 62561 (0.5%)
- 62563 (98%)
- 62572 (38%)
- 62573 (92%)
- 62615 (100%)
- 62625 (3.2%)
- 62626
- 62629 (98%)
- 62630 (96%)
- 62638 (1.6%)
- 62640 (99%)
- 62649
- 62661 (5.2%)
- 62667 (97%)
- 62672
- 62674
- 62685
- 62689
- 62690 (98%)
- 62701
- 62702 (91%)
- 62703
- 62704
- 62706
- 62707 (6.4%)
- 62711 (12%)
- 62712 (90%)
Towns
Auburn township, Ball township, Barr township, Bement township, Bird township, Brighton township, Brushy Mound township, Bunker Hill township, Cahokia township, Canteen township, Carlinville township, Centreville township, Champaign City township, Champaign township, Chatham township, Chesterfield township, Chouteau township, Colfax township, Cooper township, Cotton Hill township, Cunningham township, Divernon township, Dorchester township, East St. Louis township, Edwardsville township, Gillespie township, Girard township, Granite City township, Hillyard township, Honey Point township, Illini township, Illiopolis township, Lanesville township, Mechanicsburg township, Monticello township, Mount Olive township, Nameoki township, Niantic township, Nilwood township and North Otter township and others.
Get this in your AI agent
Your agent can draw every precinct in IL-13, 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:1713", children_level="precinct", include_districts=True)