Twin Grove is a community in McLean County, Illinois, home to about 1,458 people across 4.0 square miles. It has no ZIP code of its own: it’s part of 61705.
Homes sold for a median of $140 per square foot in the three months ending August 2026, a seller’s market.
Mostly Bloomington; part is in Twin Grove
Each card is that ZIP code’s whole market, including any part outside Twin Grove. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Twin Grove’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Chicago Midway International Airport (MDW)115 miles away |
|---|---|
| Closer regional airport | Central Illinois Regional Airport at Bloomington-Normal (BMI)8 miles away |
| Nearest city of 250,000+ | Chicago, IL120 miles away |
Straight-line distances from the center of Twin Grove; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Twin Grove had 1,524 residents in the 2020 census, down 3% since 2010.
It’s the 595th largest of 1,450 towns in Illinois by population.
McLean County grew from 67,843 residents in 1900 to 170,954 in 2020.
McLean County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 84°F in summer, and winter lows average 16°F. About 40.6 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Bloomington 5w, IL weather station (3 miles away).
75,617 jobs at 3,481 businesses in McLean County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
26 doctors and other health care providers list an office in Twin Grove.
Nearest hospitals
Providers with an office here
| Primary care doctors | 1 |
|---|---|
| Specialist doctors | 4 |
| Nurse practitioners and physician assistants | 3 |
| Mental health providers | 8 |
| Physical and occupational therapists | 9 |
| Optometrists | 1 |
| Pharmacies | 1 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Grocery stores
Pharmacies
Libraries
Museums
Theaters and performance venues
Counts are within about 1.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by McLean County USD 5. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Benjamin Elem SchoolBloomington | K–5 | 607 | Public | 10.6 mi |
| Fox Creek Elementary SchoolBloomington | K–5 | 292 | Public | 0.8 mi |
| Pepper Ridge Elementary SchoolBloomington | K–5 | 287 | Public | 2.1 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Bloomington and Downs.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.