Lemont, Illinois
24 topographic sheets cover this place, the earliest surveyed in 1892 and the latest in 1998. It stands in Lemont Township. It lies in ZIP code area 60439. It stands on Canyon Creek. The Survey maps it on the Romeoville quadrangle. 17,629 people lived here at the 2020 count. It stands 607 feet above sea level.
On record in Lemont
Buildings and businesses the archive holds for this place. Each opens its own page, with the source record it came from.
On the National Register 4 records
Lemont Central Grade Schoollisted 1975
Lemont Downtown Historic Districtlisted 2016
Lemont Methodist Episcopal Churchlisted 1986
St. James Catholic Church and Cemeterylisted 1984
Population over time
2 figuresLemont grew from 16,000 to 17,629 between 2010 and 2020. These are the recorded population figures Wikidata holds for this place, reached through the Geographic Names Information System number this page is keyed on rather than by name, so they belong to this place and not to another of the same name. Most are census counts, but not all are: an early figure may be a founding or settlement estimate, and an estimate published within five years of a census is left out. The change column is computed, and is left blank where more than 20 years separate a figure from the one before it, because a gap that long is not a change between two counts.
| Year | People | Change |
|---|---|---|
| 2010 | 16,000 | |
| 2020 | 17,629 | +1,629 (+10%) |
Topographic sheets covering this place
10 surveys from 24 printed sheetsMatched by testing this settlement's coordinate against the published boundary of every sheet in the United States Geological Survey's historical collection. Each opens the scanned sheet at the Survey.
- 1892 USGS Joliet quadrangle1:62500, 6 printings
- 1923 USGS Joliet quadrangle1:62500, 5 printings
- 1954 USGS Joliet quadrangle1:62500
- 1954 USGS Romeoville quadrangle1:24000
- 1958 USGS Aurora quadrangle1:250000, 3 printings
- 1961 USGS Aurora quadrangle1:250000
- 1962 USGS Romeoville quadrangle1:24000, 4 printings
- 1985 USGS Aurora quadrangle1:100000
- 1993 USGS Romeoville quadrangle1:24000
- 1998 USGS Romeoville quadrangle1:24000
Fires near this place
6 since 2020Regional context, not property-specific evidence. The federal wildfire occurrence database lists 6 fires within 5 miles of Lemont in 2020, burning about 4 acres in total. None started naturally. None was recorded as arson. Distance is straight-line from the map coordinates, so a fire counted here may appear on a neighbouring settlement's page as well.
| Reported cause | Fires |
|---|---|
| Missing data/not specified/undetermined | 3 |
| Debris and open burning | 2 |
| Equipment and vehicle use | 1 |
The most recent of them, most recent first, with the day each was reported and the service that recorded it.
| Date | Cause | Size | Reported by | Name on the report |
|---|---|---|---|---|
| 1 September 2020 | Debris and open burning | under an acre | Illinois Division of Forestry Resources | 20-0002215 |
| 5 May 2020 | Missing data/not specified/undetermined | under an acre | Illinois Division of Forestry Resources | 20-0000919 |
| 5 May 2020 | Missing data/not specified/undetermined | under an acre | Illinois Division of Forestry Resources | 20-0000918 |
| 13 April 2020 | Debris and open burning | 1.0 acres | Illinois Division of Forestry Resources | 20-0000723 |
| 9 November 2020 | Equipment and vehicle use | under an acre | Illinois Division of Forestry Resources | 20-0002593 |
| 1 October 2020 | Missing data/not specified/undetermined | 1.0 acres | Illinois Division of Forestry Resources | 20-0002295 |
Settlements close enough to share some of these fires:
Mines and quarries near this place
8 within 5 milesRegional context, not property-specific evidence. The federal mineral resources record lists 8 workings within 5 miles of Lemont: 5 past producers, 1 plant, 1 producer, 1 occurrence. 2 still produce. What was taken out: Stone, Crushed/Broken, Sand and Gravel, Construction, Sulfur. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.
| Where | Site | Commodity | Status | Recorded |
|---|---|---|---|---|
| (Facility) Union 76 Chicago Refinery | Sulfur | Plant | ||
| Lemont Pit | Sand and Gravel, Construction | Past Producer | ||
| Yackley Pit | Sand and Gravel, Construction | Past Producer | ||
| Barge Slip Quarry | Stone, Crushed/Broken | Past Producer | ||
| Lemont Quarry & Mill Yard 360 | Stone, Crushed/Broken | Producer | ||
| Lemont Quarry Consumers Company | Stone, Crushed/Broken | Past Producer | ||
| Limestone Prospect | Stone, Crushed/Broken | Occurrence | ||
| Unnamed Limestone Quarry | Stone, Crushed/Broken | Past Producer |
Storms near this place
30 since 1997Regional context, not property-specific evidence. The National Weather Service names Lemont in 30 storm reports between 1997 and 2025: 15 hail, 11 thunderstorm wind, 2 flash flood, 1 tornado. No death or injury is recorded in these reports. Each account below is quoted exactly as the forecast office filed it, from the NOAA Storm Events Database, and each date opens the federal record of that event.
| When | Event | Place named | Harm | What the report says |
|---|---|---|---|---|
| August 2010 | Flash Flood | Lemont | $500,000 | Several roads were closed due to flooding across southern Cook County. In Chicago Heights, 202nd Street was flooded and closed from Wood Street to Ashland Avenue. Tinley Park reported 19 locations with high standing water in the streets. In Midlothian, a church suffered flooding on the first floor; several streets were flooded and standing water in some areas was estimated to be 4 feet deep. Basement flooding was also reported in some areas. Storm total rainfall amounts included 4.10 inches in Oak Forest, 2.50 inches four miles southeast of Matteson and 1.44 inches five miles east southeast of Chicago Heights. |
| June 2011 | Thunderstorm Wind | Lemont | $1,000 | Five trees were blown down across parts of Bluff Road. Other tree limbs and power lines were blown down. |
| June 2025 | Thunderstorm Wind | Lemont | - | A power pole was snapped along 127th St west of Archer Ave in Lemont. |
| July 2025 | Thunderstorm Wind | Lemont | - | The top half of a 2 to 3 foot diameter tree was snapped off, which fell on power lines and blocked a road near Kettering Lane and Warner Avenue. |
| March 2023 | Thunderstorm Wind | Lemont | - | A 61 mph gust was measured at the Lemont Emergency Operations Center. |
| March 2023 | Thunderstorm Wind | Lemont | - | A semi truck was blown over on I-355 as it crossed the Des Plaines River north of Lemont. Wind magnitude and time were estimated based on radar. |
| July 2023 | Heavy Rain | Lemont | - | A private weather station, KILLOCKP56 , recorded over 2 inches of rainfall in a 30 minute period. |
| August 2021 | Thunderstorm Wind | Lemont | - | Wind gusts were estimated to at least 60 mph. |
| September 2019 | Flash Flood | Lemont | - | Flash flooding occurred in many areas in southern Cook County. Volmer Road was flooded and closed between Kedzie and Western near Olympia Fields. Cars were submerged in a Metra Station parking lot near Flossmoor. All lanes of Interstate 57 were flooded in an underpass near Matteson. Storm total rainfall amounts included 6.75 inches in Park Forest; 6.73 inches one mile southwest of Country Club Hills; 6.36 inches one mile east southeast of Flossmoor; 5.91 inches in Flossmoor; 5.65 inches one mile north northeast of Park Forest; 4.72 inches in Lansing and 4.63 inches in Homewood. |
| May 2017 | Thunderstorm Wind | Lemont | - | A large section of a tree was blown down. |
| October 2013 | Hail | Lemont | - | Nickel size hail was reported at Lemont and Main Street. |
| October 2006 | Hail | Lemont | - | Nickel size hail reported along 127th street at New Avenue and at State Street. |
| March 2005 | Hail | Lemont | - | Golf ball sized hail was reported in Lemont, 1922-1927 CST.Penny sized hail was reported in La Grange, 1932-1937 CST.Quarter sized hail was reported in La Grange, 1934-1937 CST. |
| March 2005 | Hail | Lemont | - | Quarter sized hail was reported in Lemont, 1725-1730 CST.Quarter sized hail was reported in Chicago Ridge near the intersection of 95th St. and I-294, 1730-1735 CST.Penny sized hail was reported in Bridgeview at the intersection of 79th St. and 78th Ave, 1738-1743 CST.Nickel sized hail was reported in Hometown, 1740-1745 CST.Penny sized hail was reported in La Grange, 1740-1745 CST.Penny sized hail was reported in Bridgeview, 1755-1800 CST. |
| July 2004 | Thunderstorm Wind | Lemont | - | Trees were knocked down on Main St. between Cortland Rd. and Rt. 83. |
| May 2003 | Tornado (F0) | Lemont | - | A weak tornado touched down near Route 83 and Archer Roads in the Forest Preserve. No damage was reported. |
| March 2025 | Hail | Lemont | - | no account filed |
| February 2024 | Hail | Lemont | - | no account filed |
| June 2019 | Hail | Lemont | - | no account filed |
| June 2019 | Hail | Lemont | - | no account filed |
| June 2019 | Hail | Lemont | - | no account filed |
| May 2018 | Hail | Lemont | - | no account filed |
| April 2015 | Hail | Lemont | - | no account filed |
| July 2007 | Hail | Lemont | - | no account filed |
| June 2004 | Hail | Lemont | - | no account filed |
| May 2003 | Hail | Lemont | - | no account filed |
| July 2003 | Thunderstorm Wind | Lemont | - | no account filed |
| June 1999 | Hail | Lemont | - | no account filed |
| July 1997 | Thunderstorm Wind | Lemont | - | no account filed |
| August 1997 | Thunderstorm Wind | Lemont | - | no account filed |
Nearest settlements
The eight closest, with where each one stands in the county. Distances are straight-line, computed from the Geographic Names Information System coordinates.
| Map | Place | Distance | Sheets |
|---|---|---|---|
| Emerald Acres | 1.4 miles | 24 | |
| Hastings | 1.7 miles | 26 | |
| Cache Lake | 2.1 miles | 24 | |
| Maple Leaf Estates | 2.1 miles | 26 | |
| Big Run Acres | 2.2 miles | 24 | |
| Creekwood | 2.4 miles | 26 | |
| Sylvan Woods | 2.8 miles | 26 | |
| Fox Hills | 3.0 miles | 26 |
Elsewhere
Matched on this settlement's Geographic Names Information System number rather than its name, so it cannot be a different place of the same name in another state.
| Wikipedia article on Lemont | An encyclopaedic summary. Its text is share-alike, so it is linked here rather than copied. |
| Wikidata item Q1589523 | The structured record the population and elevation above come from. Public domain (CC0). |
Provenance
This settlement is recorded in the Geographic Names Information System as feature 411943. The sheet list is computed by point-in-boundary test against the United States Geological Survey's historical topographic inventory. Both are works of the United States government and carry no copyright under 17 U.S.C. 105.
Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.
Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.
Storms. NOAA National Centers for Environmental Information, Storm Events Database https://www.ncei.noaa.gov/stormevents/ A work of the United States government, no copyright under 17 U.S.C. 105. Narratives are quoted verbatim from the National Weather Service report and are not edited or summarised.









