Browse / United States / Colorado / Four Square Mile
Four Square Mile
ColoradoCDP
Four Square Mile
Total population
23,024
Median home value
$474,200
Bachelor's+
Median income
$80,903
Demographic figures from US Census Bureau · ACS 5-year estimates. Overview below cites Wikipedia and may reference a different year.
City facts
Overview
Four Square Mile is an unincorporated community and a census-designated place (CDP) located in and governed by Arapahoe County, Colorado, United States. The population was 22,872 at the 2020 census. The CDP is a part of the Denver–Aurora–Lakewood, CO Metropolitan Statistical Area. The CDP is surrounded by Denver on the north, west, and south and by Aurora on the east. The name is derived from the four square miles bounded by Quebec Street, Mississippi Avenue, Havana Street and Yale Avenue. Annexation of the Arapahoe County enclave was contested between Denver and Aurora in the early 1970s, with Denver annexing east from Quebec Street and Aurora west from Havana Street. Denver’s annexations were ultimately stopped by the Poundstone Amendment; Aurora is not similarly limited but made its most recent annexation to Dayton Street in 1984, leaving nearly three of the four square miles unincorporated. The Four Square Mile CDP includes Sullivan, a previous unincorporated community designation. The area lies in ZIP codes 80231 and 80247.
Read more on WikipediaHistory & geography
Geography
The Four Square Mile CDP has an area of , all land.
Excerpted from the corresponding Wikipedia article (CC BY-SA).
Demographics & economy
Race & ethnicity
Source: US Census Bureau — American Community Survey, 5-year estimates.
Geography
Coordinates & boundaries from the US Census TIGER/Line shapefiles.
Climate
Current forecast
Forecast for Four Square Mile, CO from NOAA NWS API.
Air quality
Industrial & pollution facilities
Natural hazard risk
Health (adults)
Age-adjusted prevalence estimates from CDC PLACES (latest release).
Walkability
Amenities nearby
Wildlife & biodiversity
Most-observed species
- House FinchHaemorhous mexicanus (P.L.Statius Müller, 1776) · Aves105,318
- Northern FlickerColaptes auratus (Linnaeus, 1758) · Aves92,074
- Black-capped ChickadeePoecile atricapillus (Linnaeus, 1766) · Aves88,972
- MallardAnas platyrhynchos Linnaeus, 1758 · Aves87,142
- Canada Goose (canadensis Group)Branta canadensis (Linnaeus, 1758) · Aves77,069
- Black-billed MagpiePica hudsonia (Sabine, 1823) · Aves75,661
- American RobinTurdus migratorius Linnaeus, 1766 · Aves74,259
- American CrowCorvus brachyrhynchos C.L.Brehm, 1822 · Aves68,187
Citizen-science & research observations from the Global Biodiversity Information Facility (GBIF).
Schools
Largest nearby schools
- Cherry Creek High SchoolHigh · GREENWOOD VILLAGE · 3,797 students · 20.1:1 ratio
- Eaglecrest High SchoolHigh · CENTENNIAL · 3,093 students · 20.1:1 ratio
- Grandview High SchoolHigh · AURORA · 2,774 students · 18.7:1 ratio
- Smoky Hill High SchoolHigh · AURORA · 2,252 students · 19.1:1 ratio
- Overland High SchoolHigh · AURORA · 2,109 students · 17.4:1 ratio
- Aurora Central CampusOther · AURORA · 2,084 students · 17.2:1 ratio
- Rangeview High SchoolHigh · AURORA · 2,051 students · 21.4:1 ratio
- Arapahoe High SchoolHigh · CENTENNIAL · 1,820 students · 21.9:1 ratio
Public K–12 schools within ~10 mi from Urban Institute Education Data Portal (NCES Common Core of Data, 2022).
Earthquake history
Most recent
- M 3 — 2025-10-1711 km NNE of Black Forest, Colorado
- M 2.7 — 2025-06-137 km SE of Erie, Colorado
- M 2.5 — 2020-10-242 km ESE of Georgetown, Colorado
- M 2.9 — 2019-03-307 km NE of Greeley, Colorado
- M 3 — 2016-11-068 km ENE of Greeley, Colorado
- M 2.7 — 2016-11-068 km ENE of Greeley, Colorado
Events from the USGS Earthquake Catalog (global) (FDSN Event Web Service).
Photos
Sights & places nearby
Notable people from here









People born within ~10 km, from Wikidata (CC0). Click any name for their Wikipedia article.
Nearby places in Colorado
Geography & sun
Elevation, sunrise/sunset and daylight from Open-Meteo. Solar climatology from NASA POWER.
Nearby airports
Public attention
Pageview totals from the Wikimedia Pageviews API.
Books about Four Square Mile



Search results from Open Library.
Recent natural events nearby
- Wildfire Moonshine, Albany, WyomingWildfires · 2026-09-07 · 159 mi
- Wildfire 310, Garfield, ColoradoWildfires · 2026-08-06 · 166 mi
- Wildfire Post, Las Animas, ColoradoWildfires · 2026-08-11 · 181 mi
- Wildfire Swiss Roll, Archuleta, ColoradoWildfires · 2026-08-20 · 189 mi
- Wildfire Sheep Pen, Las Animas, ColoradoWildfires · 2026-08-12 · 200 mi
- Wildfire Cold Springs, Converse, WyomingWildfires · 2026-08-10 · 213 mi
- Wildfire LAUGHLIN, Colfax, New MexicoWildfires · 2026-08-25 · 219 mi
- Wildfire Rabbit Ear East, Union, New MexicoWildfires · 2026-08-24 · 239 mi
Wildfires, storms and other events from NASA EONET (last 12 months, within 250 mi).
Ground air-quality sensors
Recently spotted species
Nearest stream gauge
Events
Gallery
Sources
- • Wikipedia
- • US Census Bureau (ACS 5-year estimates)
- • NOAA National Weather Service
- • Wikidata
- • USGS Earthquake Catalog (global feed)
- • NCES via Urban Institute Education Data Portal
- • GBIF (Global Biodiversity Information Facility)
- • CDC PLACES
- • Open-Elevation
- • Open-Meteo / sunrise-sunset.org
- • Wikipedia Pageviews API
- • Open Library
- • NASA EONET