County Maps US

Rockland County, New York

A county in New York, ranked 13 of 62 by population.

CountyFIPS 36087

Within New York
Rockland County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data.

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Population
357,397
+19,968 (+5.9%) since 2020
Land area
173.7
square miles. A further 12.9% of the total area is water
Population density
2,058
people per square mile, computed rather than published
County seat
New City
Seat of county government.
Established
1798
227 years ago
Largest city
Spring Valley village
Population 34,482.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Rockland County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Rockland County, New York from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 654 by 800 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Rockland County ranks

Position among the 62 counties of New York, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn New YorkNationally
Population357,39713th of 62212th of 3,144
Land area173.7 sq mi57th of 623,036th of 3,144
Population density2,058 per sq mi8th of 6272nd of 3,144
Median household income$109,9595th of 6299th of 3,143

Full data for Rockland County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population357,397Vintage 2025 Population Estimates
Population in 2020337,429Vintage 2025 Population Estimates
2020 estimates base?338,332Vintage 2025 Population Estimates
Land area173.7 sq mi2025 Gazetteer Files
Water area25.8 sq mi2025 Gazetteer Files
Total area199.5 sq mi2025 Gazetteer Files
Population density?2,058 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$109,959American Community Survey 2020-2024 5-Year Estimates
Median home value$596,900American Community Survey 2020-2024 5-Year Estimates
Median age34.8American Community Survey 2020-2024 5-Year Estimates
Households103,879American Community Survey 2020-2024 5-Year Estimates
Housing units108,945American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
+4,568
6,787 births, 2,219 deaths
Net migration
-2,007
More people moved out than moved in.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 5 areas bordering Rockland County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Westchester CountyNew York25 mi1,015,743
Bergen CountyNew Jersey19 mi977,026
Orange CountyNew York18 mi417,669
Passaic CountyNew Jersey1.4 mi531,624
Putnam CountyNew York0.3 mi99,028

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 62 counties of New York

Open the interactive New York county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.