190 years in pictures
Census counts: 2,108 in 1880, 17,629 in 2020. The archive holds 18 old photos and papers going back to 1869 and 7 maps from 1890 on.
1 place on the National Register of Historic Places.
- 1836Lemont Township is settled
Each edition grades its towns against each other only.

A town of 23,223, settled in 1836.
Lemont Township is one of the best-graded places in America: an A+, 25th among Illinois's 767 graded towns. It is healthier than 94% of U.S. towns, the median household earns $121K, and its schools outperform 84% of the state's. Its lowest mark, a C, is in cost of living. Lemont Township’s trail density is 2.5 miles per square mile, against 0.3 in Illinois’ towns and 0.4 across U.S. towns. Lemont Township is easier to get around on foot or by transit than 88% of U.S. towns. St. James Catholic Church and Cemetery is on the National Register of Historic Places.
Where Lemont Township beats most towns.
| School | Grades | Students |
|---|---|---|
| Oakwood School | PK–1 | 629 |
| Central School | 4–5 | 591 |
| River Valley School | 2–3 | 588 |
3.3% of the town is conserved land, across 24 parks and preserves.
Each subject compared with towns across the country (schools within Illinois), ordered by how far Lemont Township is from typical.
How TownRatings grades towns →
Census counts: 2,108 in 1880, 17,629 in 2020. The archive holds 18 old photos and papers going back to 1869 and 7 maps from 1890 on.
1 place on the National Register of Historic Places.
Museums, parks, gardens and other places to visit around Lemont Township. Close and well known come first.
Big draw22 mi Stadium & arenaSoldier Field
Big draw25 mi Stadium & arenaWrigley Field
Big draw21 mi MuseumBarack Obama Presidential Center
Big draw20 mi Stadium & arenaRate Field
Big draw21 mi Stadium & arenaUnited Center
Big draw23 mi MuseumArt Institute of Chicago1.5M visitors a yearSoldier Field: Photo by Joon Han Contact: [email protected], CC BY-SA 3.0 · Wrigley Field: Ryan Dickey, CC BY 2.0 · Barack Obama Presidential Center: AlphaBeta135, CC0 · Rate Field: User Enoch Lai on en.wikipedia, CC BY-SA 3.0 · United Center: User:JeremyA, CC BY-SA 2.5 · Art Institute of Chicago: ajay_suresh, CC BY 2.0
Who provides power, water and the rest in Lemont Township, and how to reach them.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Sep 12, 2025.
Ordered by what stands out in Lemont Township.
Lemont Township has less food insecurity than most of Illinois, but it has commutes longer than most of Illinois.
53 miles of trail in 24 parks and preserves. The biggest park or preserve is Sag Valley Forest Preserve, at 411 acres.
| Biggest places to walk | Trails | Acres |
|---|---|---|
| 1. Sagawau Canyon Nature Preserve | 2.1 mi | 162 |
| 2. Centennial Park | 1.3 mi | 71 |
| 3. Heritage Woodland Sanctuary | 1.2 mi | 65 |
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
Its public schools are run by Lemont-Bromberek CSD 113A. Three of its 8 schools are below, each with why it’s listed.
| School | Level | Students | Letter |
|---|---|---|---|
| Old Quarry Middle SchLargest public middle schoolGrades 6–8 | Grades 6–8 | 856 | A |
| Lemont Twp High SchoolLargest public high schoolGrades 9–12 | Grades 9–12 | 1,284 | A |
| River Valley SchoolTop results in townGrades 2–3 | Grades 2–3 | 588 | A |
NCES · EDFacts · graded within IL on state tests and graduation
Its widest gap with Illinois is food insecurity: 9.4% of its 18,940 adults worry about having enough food, against 15.9% statewide.
27% of Lemont Township adults have obesity, below both the Illinois town median (37%) and the median of U.S. towns (35%). 14% of adults report frequent mental distress in Lemont Township. Lemont Township beats the Illinois average on 20 of 32 CDC measures and trails it on 1.
| Lemont Township | Illinois towns | U.S. towns | |
|---|---|---|---|
| Obesity (CDC PLACES) | 27% | 37% | 35% |
| Frequent mental distress (CDC PLACES) | 14% | 17% | 17% |
| Binge drink (CDC PLACES) | 20% | 18% | 16% |
| Get no exercise (CDC PLACES) | 18% | 23% | 25% |
| What stands out | Lemont Township | IL |
|---|---|---|
| Fewer adults facing food insecurity | 9.4% | 15.9% |
| Fewer adults facing a utility shut-off | 4.7% | 7.8% |
| More adults who have had cancer | 9.7% | 7.6% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
The average commute for its 9,979 working residents takes 35 minutes, against 27.8 across Illinois.
Most working residents leave Lemont Township for work: only 11% work in town. Lemont Township’s average trip to work is 35 minutes. The top destinations are Chicago (22%), Lemont (10%) and Downers Grove (3%).
| Lemont Township | Illinois towns | U.S. towns | |
|---|---|---|---|
| Average trip to work | 35 minutes | 26 minutes | 25 minutes |
| Median household income | $121,000 | $83,000 | $80,000 |
| Below the poverty line | 3.9% | 8.4% | 9.6% |
| Work from home | 16% | 11% | 11% |
Census LEHD 2023 · ACS
Adults 18 to 34 are 13% of residents (23% statewide); people 65 and older are 23% of residents (17% statewide). 46% of Lemont Township adults 25 and older hold a bachelor’s degree or more. Lemont Township has grown 2.5% since 2020, to 23,223 residents in the Census Bureau’s 2025 estimate.
| Lemont Township | Illinois towns | U.S. towns | |
|---|---|---|---|
| Bachelor’s degree or more, 25+ | 46% | 29% | 29% |
| Aged 65 or older | 22% | 19% | 18% |
| Median age | 44.5 years | 40.7 years | 40.5 years |
| Under 18 | 25% | 22% | 22% |
49% women, 51% men
That’s an even split within the survey’s margin of ±2.4 points. Across Illinois, 50.6% of residents are women.
| Lemont Township | IL | U.S. | |
|---|---|---|---|
| Under 10 | 13.4% | 11.5% | 11.6% |
| 10 to 17 | 11.3% | 10.4% | 10.3% |
| 18 to 24 | 5.8% | 9.1% | 9.1% |
| 25 to 34 | 6.7% | 13.6% | 13.7% |
| 35 to 44 | 13.6% | 13.3% | 13.2% |
| 45 to 54 | 12.2% | 12.4% | 12.2% |
| 55 to 64 | 14.5% | 12.8% | 12.7% |
| 65 to 74 | 11.6% | 10% | 10.2% |
| 75 and older | 10.9% | 7% | 7% |
| No diploma | 4.1% | 9.5% | 10.4% |
| High school | 21.8% | 25.1% | 26% |
| Some college | 19.9% | 19.2% | 19.1% |
| Associate’s | 8.4% | 8.3% | 8.8% |
| Bachelor’s | 25.8% | 22.6% | 21.6% |
| Graduate | 20% | 15.3% | 14.1% |
Census population estimates, 2025 · U.S. Census Bureau · ACS 2020-2024 5-year estimates
Expected storm and flood damage is lower than in 71% of U.S. communities. Since 1979, 7 flood insurance claims have been paid out in Lemont Township.
FEMA flood insurance claims · FEMA National Risk Index · OpenFEMA
Lemont Township has chilly, snowy winters and warm summers. July afternoons reach 84°, January nights drop to 16° and about 33 inches of snow falls in a winter.
NOAA U.S. Climate Normals, 1991–2020
15 within 15 miles of the center of Lemont Township
About 5 of every 100 Lemont Township residents are enrolled in college, about the same as Illinois.
Where Lemont Township’s working residents go each day. Line width shows the share.
Census LEHD 2023
Village in Illinois, United States
Lemont is a village located in Cook, DuPage, and Will counties in the U.S. state of Illinois, and is a south-west suburb of Chicago. The population was 17,629 as of the 2020 census. The village is situated on a hillside along the south banks of the Des Plaines River. It overlooks Waterfall Glen's Midwestern Bluff Savanna on the opposite side. The Lemont area is home to Argonne National Laboratory and other heavy industrial sites, and has a substantial European immigrant population.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
8 towns share a border with Lemont Township.
At #25 in IL, it grades higher overall than all 7 graded towns on its borders; Downers Grove Township (A) comes closest.
| Town | IL rank | Overall | Cost | Safety | Schools | Health |
|---|---|---|---|---|---|---|
| Lemont Township | #25 | A+ | C | — | A− | A |
| Downers Grove Township | #82 | A | D | — | A | A |
| Palos Township | #157 | A | C | — | A | A |
| Willow Springs | #102 | A | D | A | A | A |
| Homer Township | #340 | B+ | D | — | A− | A− |
| Homer Glen | #160 | A | D | A+ | A− | A− |
| Lemont | #13 | A+ | C | A− | A− | A+ |
| Woodridge | #100 | A | D | A− | A− | A |
Lemont Township, Downers Grove Township, Palos Township and Homer Township report no FBI crime data of their own. Compare Lemont Township with a neighbor →
Short answers, built from the data on this page.
Yes, by almost any measure. Lemont Township grades A+ overall, better than 97% of U.S. towns and #25 of 767 in Illinois. It grades A for health and A− for schools.
Cost of living, which also weighs rents, property taxes and how many households pay 30% or more of their income for housing, grades C.