# Key Largo, Florida

Key Largo is an unincorporated area and census-designated place in Monroe County, Florida, United States, located on the island of Key Largo in the upper Florida Keys. The population was 12,447 at the 2020 census, up from 10,433 in 2010. The name comes from the Spanish Cayo Largo, or "long key". It is both the first island and town of the Florida Keys to be reached from the Overseas Highway to Key West. It was also the location of one of the stations of the Overseas Railroad.

## Geography

Key Largo is located at 25°6′24″N 80°25′48″W﻿ / ﻿25.10667°N 80.43000°W﻿ / 25.10667; -80.43000 (25.106637, -80.429917). It shares the island of Key Largo with Tavernier to the southwest and North Key Largo to the northeast. U.S. Route 1, the Overseas Highway, runs the length of the community, leading north 57 miles (92 km) to Miami and southwest 97 miles (156 km) to Key West.
According to the United States Census Bureau, the CDP has a total area of 15.2 square miles (39 km$^2$), of which 12.0 square miles (31 km$^2$) are land and 3.2 square miles (8.3 km$^2$), or 20.96%, are water.
Key Largo is the location of the first undersea park in the United States, established in 1963, and called the John Pennekamp Coral Reef State Park (located at Mile Marker 102). The park is primarily offshore and stretches 3 miles (5 km) into the Atlantic Ocean and is 25 miles (40 km) long. Adjacent to this is the Florida Keys National Marine Sanctuary covering 178 square nautical miles. Both areas were designed to protect marine life, including the extensive coral reefs in the area.

### Climate

According to the Köppen climate classification, Key Largo has a tropical monsoon climate (Am).
Climate data for John Pennekamp State Park, Florida, 1991–2020 normals, extremes 2004–present :
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °F (°C) | 85 (29) | 89 (32) | 88 (31) | 93 (34) | 93 (34) | 94 (34) | 95 (35) | 93 (34) | 93 (34) | 91 (33) | 88 (31) | 86 (30) | 95 (35) |
| Mean maximum °F (°C) | 81.9 (27.7) | 83.1 (28.4) | 85.2 (29.6) | 87.3 (30.7) | 88.7 (31.5) | 91.0 (32.8) | 91.9 (33.3) | 92.0 (33.3) | 90.9 (32.7) | 89.0 (31.7) | 85.2 (29.6) | 83.3 (28.5) | 92.9 (33.8) |
| Mean daily maximum °F (°C) | 76.2 (24.6) | 78.0 (25.6) | 79.7 (26.5) | 82.5 (28.1) | 85.1 (29.5) | 88.1 (31.2) | 89.8 (32.1) | 90.1 (32.3) | 88.8 (31.6) | 85.9 (29.9) | 81.4 (27.4) | 78.1 (25.6) | 83.6 (28.7) |
| Daily mean °F (°C) | 69.4 (20.8) | 71.2 (21.8) | 73.2 (22.9) | 76.6 (24.8) | 79.7 (26.5) | 82.6 (28.1) | 84.1 (28.9) | 84.5 (29.2) | 83.3 (28.5) | 80.6 (27.0) | 75.7 (24.3) | 71.9 (22.2) | 77.7 (25.4) |
| Mean daily minimum °F (°C) | 62.6 (17.0) | 64.5 (18.1) | 66.8 (19.3) | 70.7 (21.5) | 74.2 (23.4) | 77.2 (25.1) | 78.5 (25.8) | 78.8 (26.0) | 77.8 (25.4) | 75.3 (24.1) | 69.9 (21.1) | 65.8 (18.8) | 71.8 (22.1) |
| Mean minimum °F (°C) | 45.9 (7.7) | 49.3 (9.6) | 52.3 (11.3) | 60.1 (15.6) | 66.6 (19.2) | 71.5 (21.9) | 72.9 (22.7) | 72.7 (22.6) | 72.1 (22.3) | 65.7 (18.7) | 57.1 (13.9) | 52.2 (11.2) | 43.2 (6.2) |
| Record low °F (°C) | 34 (1) | 38 (3) | 44 (7) | 52 (11) | 60 (16) | 68 (20) | 70 (21) | 71 (22) | 65 (18) | 54 (12) | 46 (8) | 37 (3) | 34 (1) |
| Average precipitation inches (mm) | 2.13 (54) | 2.01 (51) | 2.22 (56) | 3.33 (85) | 4.76 (121) | 7.91 (201) | 5.81 (148) | 6.89 (175) | 8.18 (208) | 7.87 (200) | 3.31 (84) | 2.53 (64) | 56.95 (1,447) |
| Average precipitation days (≥ 0.01 in) | 7.5 | 6.2 | 5.1 | 6.7 | 7.1 | 10.9 | 13.0 | 14.5 | 16.1 | 11.6 | 8.9 | 7.9 | 115.5 |
| Source: NOAA (mean maxima/minima, precip days 2006–2020) ||||||||||||||

## Demographics
### 2020 census

Key Largo racial composition :
| Race | Number | Percentage |
| White (non-Hispanic) | 8,012 | 64.37% |
| Black or African American (non-Hispanic) | 213 | 1.71% |
| Native American | 19 | 0.15% |
| Asian | 115 | 0.92% |
| Pacific Islander | 8 | 0.06% |
| Other/Mixed | 397 | 3.19% |
| Hispanic or Latino | 3,683 | 29.59% |
As of the 2020 United States census, there were 12,447 people, 4,326 households, and 2,692 families residing in the CDP. The population density was 377.7 people/km$^2$ (978 people/sq mi). There were 8,043 housing units at an average density of 255.6 units/km$^2$ (662 units/sq mi). There were 4,326 households, out of which 23.7% had children under the age of 18 living with them, 50.5% were married couples living together, 7.4% had a female householder with no husband present, and 37.3% were non-families. 27.6% of all households were made up of individuals, and 8.8% had someone living alone who was 65 years of age or older. The average household size was 2.26, and the average family size was 2.75.
In the CDP, the population was spread out, with 19.7% under the age of 18, 5.6% from 18 to 24, 28.7% from 25 to 44, 30.3% from 45 to 64, and 15.8% who were 65 years of age or older. The median age was 43 years. For every 100 females, there were 107.8 males. For every 100 females age 18 and over, there were 107.6 males.
The average income for a household in the CDP was $42,577, and the median income for a family was $50,755. Males had a median income of $33,588 versus $25,468 for females. The per capita income for the CDP was $25,441. About 5.9% of families and 8.3% of the population were below the poverty line, including 8.7% of those under age 18 and 7.8% of those age 65 or over.

## Education

The Monroe County School District operates the Key Largo School.
The Roman Catholic Archdiocese of Miami formerly operated the Saint Justin Martyr, Academy of Marine Science (PK-9) school in Key Largo.

## In popular culture

The 1948 film Key Largo, starring Edward G. Robinson, Lauren Bacall, and Humphrey Bogart, was set there. The 1981 hit single "Key Largo" by Bertie Higgins was inspired by the film, not the namesake town. Conversely, the 1984 single "Smooth Operator" by Sade references the town, rather than the film. The song "Kokomo" by the Beach Boys also references Key Largo.

## Notable people

* Dick Rutkowski, founder of IANTD