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Four Square Mile, CO

Full City Profile · Colorado · Denver County County

3.2 /5.0
B Good
21,788 Population 8,070/sq mi density
$73,318 Median Income $42,450 per capita
$448,200 Home Value $328,805 Zillow
$1,796 Median Rent 30.6% income on rent
51°F Avg Temperature 297 sunny days/yr
965 Violent Crime/100K 10,531 property/100K
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
A
Economy
4.1 / 5.0
$73,318 median income, 2.5% unemployment
B
Affordability
3.2 / 5.0
$448,200 home value, $1,796/mo rent
F
Safety
1.0 / 5.0
965 violent crimes/100K (154% above avg)
A+
Education
4.6 / 5.0
45.2% bachelor's degree or higher
Four Square Mile experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 32°F in January while summers reach 73°F in July. The area gets 297 sunny days per year. Air quality is rated Good with a median AQI of 41.

Temperature

32°F Jan (0°C) 73°F Jul (23°C)
Annual Average50.8°F
6% below US avg
January Average32°F (0°C)
July Average73°F (23°C)
Sunny Days297 days/yr

Geography

Elevation5,440 ft (1,658 m)
Area2.7 sq mi (7.0 km²)
Population Density8,070/sq mi
Coordinates39.6807°N, 104.8879°W
TimezoneAmerica/Denver
CountyDenver County County
Nearest AirportDenver International (DEN)
17 miles away

Precipitation & Snow

Wettest Month (May) 2.48"
Driest Month (Jan) 0.51"

Air Quality

AQI Median41.0
RatingGood

Air Pollutants (EPA 2023)

Ozone (O₃)0.0480 ppm
NO₂ (Nitrogen Dioxide)26.5 ppb
SO₂ (Sulfur Dioxide)0.77 ppb
CO (Carbon Monoxide)0.36 ppm
PM2.5 (Fine Particles)6.9 μg/m³

Natural Hazard Risk

Overall RiskRelatively High
Risk Score95.2 / 100
Social Vulnerability17.8 / 100
Community Resilience68.5 / 100

Hazard Breakdown

Tornado Relatively High
Earthquake Relatively Moderate
Wildfire Very Low
Flood Relatively High
Hail Very High
Strong Wind Relatively High
Heat Wave Relatively Low
Winter Weather Relatively High
Lightning Very High
Ice Storm Very Low
Drought Very Low
Cold Wave Relatively High
Landslide Relatively Moderate
Volcano Very Low
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

17 earthquakes (M2.5+) within 150 km since 1990. Strongest: M4.0. Most recent: M2.7 on Jun 13, 2025.

Dec 25, 1994 9 km NE of Larkspur, Colorado M4.0 44 km
Dec 23, 1995 7 km WNW of Rock Creek Park, Colorado M3.5 106 km
Jan 18, 1997 8 km SE of Westcreek, Colorado M3.3 67 km
Jun 1, 2014 9 km NNW of Kersey, Colorado M3.2 91 km
Jan 26, 2008 12 km NE of Cotopaxi, Colorado M3.1 150 km
Jul 22, 2001 6 km WNW of Woodland Park, Colorado M3.1 76 km
Sep 12, 1990 13 km NW of Silverthorne, Colorado M3.0 113 km
Feb 26, 2008 29 km WNW of Westcreek, Colorado M2.9 67 km
Jan 19, 1997 8 km SE of Westcreek, Colorado M2.9 67 km
Mar 30, 2019 7 km NE of Greeley, Colorado M2.9 90 km
Dec 31, 1995 6 km WNW of Rock Creek Park, Colorado M2.8 107 km
Apr 18, 1998 8 km SE of Westcreek, Colorado M2.7 67 km
Jun 13, 2025 7 km SE of Erie, Colorado M2.7 37 km
Jan 19, 1997 8 km SE of Westcreek, Colorado M2.7 67 km
Aug 23, 2016 2 km SSE of Eaton, Colorado M2.6 93 km
Jun 26, 2021 19 km WNW of Cañon City, Colorado M2.5 138 km
Jun 23, 2014 6 km NNE of Kersey, Colorado M2.5 90 km
Source: USGS (M2.5+, 1990–2025)

Tornado History

751 tornadoes (EF0+) within 100 km since 1950. Strongest: EF3. Total: 1 fatality, 163 injuries.

Date Rating Distance Fatalities
Jun 4, 2015 EF3 65 km 0
May 22, 2008 EF3 62 km 1
Jun 15, 1988 EF3 7 km 0
Jun 12, 1982 EF3 34 km 0
Jun 24, 1979 EF3 92 km 0
Jun 13, 1977 EF3 84 km 0
May 18, 1975 EF3 19 km 0
May 15, 1952 EF3 77 km 0
Jun 7, 2021 EF2 51 km 0
May 7, 2016 EF2 87 km 0
Jun 8, 2014 EF2 92 km 0
Jun 7, 2012 EF2 80 km 0
Jun 15, 2009 EF2 54 km 0
May 10, 2004 EF2 85 km 0
Jul 31, 1996 EF2 91 km 0
Jul 13, 1996 EF2 44 km 0
Jun 15, 1988 EF2 7 km 0
Jun 5, 1988 EF2 34 km 0
Jun 5, 1988 EF2 36 km 0
Jul 7, 1987 EF2 91 km 0
Source: NOAA SPC (EF0+, 1950–2024)

Wildfire History

20 wildfires (100+ acres) within 100 km. Largest: HAYMAN (129,417 ac, 2002).

Year Name Acres Distance
2002 HAYMAN 129,417 62 km
2012 WALDO CANYON 20,112 84 km
2020 WILLIAMS FORK 14,679 95 km
2013 BLACK FOREST 11,885 73 km
1996 BUFFALO CREEK 11,690 46 km
2000 BOBCAT 10,444 95 km
2020 CALWOOD 9,836 65 km
2000 HIGH MEADOWS 9,607 51 km
2001 MVD PSFRXASST 4 7,375 55 km
2021 MARSHALL 6,286 40 km
2010 FOURMILE CANYON 5,865 59 km
2002 BIG ELK 4,348 81 km
2021 BIJOU 3,485 96 km
2012 LOWER NORTH FORK FIRE 3,436 37 km
2003 OVERLAND 3,232 64 km
2009 OLD STAGE 3,160 57 km
2002 SCHOONOVER 2,821 57 km
2020 SUNDAY FIRE 2,204 60 km
2002 SNAKING 2,080 60 km
2023 403 1,767 97 km
Source: NIFC/IRWIN (100+ acres)

Monthly Weather

Month Avg Temperature Precipitation Summary
January 32°F (0°C) 0.5 in Driest
February 35°F (2°C) 0.5 in
March 41°F (5°C) 1.4 in
April 48°F (9°C) 2.0 in
May 58°F (14°C) 2.5 in Wettest
June 68°F (20°C) 1.8 in
July 73°F (23°C) 2.0 in Warmest
August 72°F (22°C) 1.7 in
September 63°F (17°C) 1.3 in
October 51°F (11°C) 1.1 in
November 39°F (4°C) 1.0 in
December 32°F (-0°C) 0.6 in Coldest

Four Square Mile has a seasonal temperature swing of 42°F / from 32°F in December to 73°F in July. Total annual precipitation is 16.4 inches, with May being the wettest month (2.5") and January the driest (0.5").

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