Lake Ronkonkoma

Census-designated place in Suffolk County, New York

View of Lake Ronkonkoma, New York
Photo: Vitsuha · CC0

Lake Ronkonkoma is an unincorporated community (census-designated place) in Suffolk County, New York, with 18,619 residents (2020 Census). It sits at 72 ft (22 m) above sea level. The nearest town is Lake Grove, 1.9 miles N.

About Lake Ronkonkoma

Lake Ronkonkoma is a hamlet and census-designated place (CDP) in Suffolk County, on Long Island, in New York, United States. The population was 18,619 at the time of the 2020 census.

Located on the north and east sides of the eponymous lake, Lake Ronkonkoma is mainly located within the Town of Brookhaven, with the northwestern section being located within the Town of Smithtown.

Text: Wikipedia · CC BY-SA 4.0

Lake Ronkonkoma weather: 7-day forecast

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Living in Lake Ronkonkoma

Median household income
$101,633
Median home value
$525,000
Median rent
$2,170/mo
Median age
42.6
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Map of Lake Ronkonkoma

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Lake Ronkonkoma Street View

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Lake Ronkonkoma, NY population

Lake Ronkonkoma had 18,619 residents in the 2020 Census.

2020 Census18,619
Density4,104 per sq mi (1,585 per km²)

Source: U.S. Census Bureau, Decennial Census.

Lake Ronkonkoma at a glance

StateNew York (NY)
CountySuffolk County
TypeCensus-designated place
Population18,619 (2020)
Land area4.54 sq mi (11.7 km²)
Water area0.00 sq mi (0.01 km²)
Elevation72 ft (22 m)
Coordinates40.8303° N, 73.1133° W
ZIP codes11779, 11755, 11767
Census code (GEOID)3640838

Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.

Towns near Lake Ronkonkoma

Straight-line distance between town centers.

Frequently asked questions about Lake Ronkonkoma

What county is Lake Ronkonkoma in?

Lake Ronkonkoma is in Suffolk County, New York.

What is the population of Lake Ronkonkoma, NY?

18,619 people lived in Lake Ronkonkoma at the 2020 Census.

What is the ZIP code of Lake Ronkonkoma, NY?

The main ZIP code is 11779. Other ZIP codes: 11755, 11767.

What is the elevation of Lake Ronkonkoma?

72 feet (22 m) above sea level.

What towns are near Lake Ronkonkoma?

Lake Grove (1.9 mi), Ronkonkoma (1.9 mi), Nesconset (2.3 mi), Centereach (3.1 mi), Holbrook (3.4 mi).

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