November 8, 2025 | Andy Arthur.org

	1970	1980	1990	2000	2010	2020	2021	Change 1970 – 2021
Population Changes Since 1970
Chemung	101,449	97,500	95,292	91,094	88,895	83,882	83,045	−18.1%
Oneida	273,442	253,717	251,191	235,146	234,752	231,695	230,274	−15.8%
Erie	1,114,792	1,014,484	969,780	949,440	919,160	953,254	950,683	−14.7%
Chautauqua	147,854	147,061	142,054	139,593	134,726	127,424	126,807	−14.2%
Montgomery	56,133	53,431	52,036	49,605	50,312	49,433	49,558	−11.7%
Herkimer	67,739	66,718	65,883	64,451	64,470	60,007	59,937	−11.5%
Broome	222,065	213,850	212,252	200,351	200,474	198,199	197,240	−11.2%
Niagara	235,525	227,168	221,163	219,620	216,474	212,252	211,653	−10.1%
Cattaraugus	82,176	85,852	84,455	83,927	80,220	76,907	76,426	−7.0%
Steuben	99,756	99,272	99,286	98,764	98,969	93,363	92,948	−6.8%
Seneca	35,133	33,781	33,710	33,343	35,271	33,715	33,688	−4.1%
St. Lawrence	112,615	114,321	112,158	111,864	111,821	108,311	108,051	−4.1%
Bronx	1,472,841	1,167,602	1,207,053	1,334,319	1,386,929	1,466,438	1,424,948	−3.3%
Nassau	1,426,744	1,321,080	1,286,905	1,336,713	1,341,642	1,393,978	1,390,907	−2.5%
Cayuga	77,728	80,002	82,446	81,871	79,905	76,095	75,880	−2.4%
Schenectady	161,374	149,985	149,519	146,581	154,867	157,861	158,089	−2.0%
Genesee	58,934	59,533	60,167	60,539	59,932	58,258	57,853	−1.8%
Allegany	46,782	51,830	50,522	49,819	48,973	46,373	46,106	−1.4%
Delaware	45,009	46,849	47,464	47,864	47,888	44,186	44,378	−1.4%
Fulton	53,084	55,171	54,336	54,976	55,453	53,160	53,116	0.1%
Onondaga	472,762	463,908	469,903	458,034	467,549	475,653	473,236	0.1%
Chenango	46,426	49,424	51,813	51,325	50,404	47,073	46,537	0.2%
Cortland	45,877	48,883	49,127	48,693	49,277	46,723	46,311	0.9%
Kings	2,603,413	2,232,003	2,303,679	2,467,006	2,509,954	2,727,393	2,641,052	1.4%
Tioga	46,744	49,960	52,479	51,838	51,012	48,355	47,980	2.6%
New York	1,535,554	1,427,238	1,487,073	1,540,547	1,589,041	1,687,834	1,576,876	2.7%
Otsego	56,350	59,125	60,518	61,860	62,260	58,351	58,123	3.1%
Rensselaer	152,890	152,086	154,680	152,684	159,342	160,923	160,232	4.8%
Schuyler	16,754	17,720	18,705	19,232	18,341	17,857	17,752	6.0%
Monroe	712,056	703,490	715,825	738,979	744,589	758,554	755,160	6.1%
Wyoming	38,000	39,950	42,563	43,399	42,125	40,401	40,491	6.6%
Madison	63,001	65,310	69,300	69,450	73,442	67,890	67,658	7.4%
Franklin	44,140	44,923	46,668	51,044	51,642	47,527	47,456	7.5%
Orleans	37,363	38,547	41,970	44,178	42,850	40,236	40,191	7.6%
Essex	34,601	36,202	37,286	38,911	39,359	37,336	37,268	7.7%
Clinton	73,656	80,746	86,160	79,891	82,099	79,715	79,596	8.1%
Hamilton	4,725	5,027	5,292	5,377	4,852	5,078	5,119	8.3%
Albany	287,114	286,290	292,956	295,106	304,085	314,368	313,743	9.3%
Westchester	894,227	866,971	875,578	925,511	950,760	1,003,245	997,895	11.6%
Lewis	23,756	25,007	26,872	26,989	27,072	26,538	26,573	11.9%
Livingston	54,303	57,131	62,477	64,705	65,226	61,699	61,578	13.4%
Wayne	79,703	84,824	89,365	93,791	93,751	91,103	90,923	14.1%
Washington	52,938	54,807	59,507	60,977	63,359	61,143	60,956	15.1%
Oswego	101,522	113,862	122,302	122,477	122,141	117,351	117,387	15.6%
Queens	1,987,909	1,893,095	1,957,281	2,230,501	2,234,574	2,395,791	2,331,143	17.3%
Columbia	52,050	59,620	63,048	63,046	63,035	61,550	61,778	18.7%
Schoharie	25,093	29,727	31,938	31,514	32,684	29,720	29,863	19.0%
Yates	19,978	21,473	22,891	24,723	25,376	24,709	24,613	23.2%
Ulster	142,334	158,183	166,049	177,810	182,422	181,687	182,951	28.5%
Jefferson	88,755	88,145	111,549	111,790	116,609	116,134	116,295	31.0%
Warren	49,704	54,989	59,520	63,273	65,668	65,638	65,618	32.0%
Dutchess	223,602	245,415	260,238	280,914	297,721	295,742	297,112	32.9%
Suffolk	1,132,780	1,285,719	1,322,686	1,424,081	1,494,337	1,524,099	1,526,344	34.7%
Tompkins	77,106	87,380	94,241	96,608	101,743	105,404	105,162	36.4%
Ontario	79,338	89,106	95,352	100,106	108,183	112,475	112,508	41.8%
Greene	33,475	40,897	44,847	47,986	49,137	47,890	48,499	44.9%
Rockland	231,105	259,596	265,981	287,720	312,497	338,121	339,227	46.8%
Sullivan	53,161	65,046	69,545	74,134	77,480	78,643	79,806	50.1%
Richmond	297,331	353,101	380,564	445,235	469,607	495,522	493,494	66.0%
Putnam	57,074	77,458	84,222	96,049	99,644	97,660	97,936	71.6%
Orange	222,938	260,631	308,803	342,892	373,451	401,322	404,525	81.5%
Saratoga	123,251	154,154	182,259	201,514	220,123	235,689	237,359	92.6%
Andy Arthur, 12/3/22. Created in RStudio using gt/dplyr. Data Source: NYS County Population Estimates, 1970-2021. data.ny.gov