Cities in Rensselaer County, New York by Population (2024)

There are 19 cities in Rensselaer County, New York.

Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)

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City	Rank	State	2024 Population	2020 Census	Annual Change	Density (mi²)	Area (mi²)
Troy	1	New York	50,453	51,337	-0.44%	4,871	10.36
Rensselaer	2	New York	9,286	9,210	0.21%	2,921	3.18
East Greenbush	3	New York	6,595	6,299	0.18%	1,684	3.92
Hampton Manor	4	New York	5,527	5,161	1.69%	1,844	3
Mechanicville	5	New York	5,116	5,162	-0.21%	6,098	0.84
Wynantskill	6	New York	3,925	3,420	3.18%	1,148	3.42
West Sand Lake	7	New York	3,217	3,391	-1.32%	675	4.77
Hoosick Falls	8	New York	3,120	3,202	-0.64%	1,952	1.60
Valatie	9	New York	1,857	1,647	2.94%	1,481	1.25
Averill Park	10	New York	1,588	1,466	-0.63%	393	4.04
Niverville	11	New York	1,512	1,414	1.68%	526	2.87
Castleton-on-Hudson	12	New York	1,451	1,467	-0.27%	2,032	0.71
Nassau	13	New York	1,074	1,102	-0.65%	1,536	0.70
Nassau Lake	14	New York	918	762	4.44%	603	1.52
Round Lake	15	New York	889	815	2.18%	792	1.12
Poestenkill	16	New York	694	814	-4.14%	118	5.88
Schaghticoke	17	New York	548	560	-0.54%	723	0.76
East Nassau	18	New York	511	521	-0.39%	105	4.86
Valley Falls	19	New York	447	457	-0.45%	965	0.46

Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.

What is the largest city in Rensselaer County, New York?

Troy is the largest city in Rensselaer County.

What is the smallest city in Rensselaer County, New York?

Valley Falls is the smallest city in Rensselaer County.

How many cities are in Rensselaer County?