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

There are 48 cities in Jefferson 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)
Watertown	1	New York	24,334	24,568	-0.24%	2,694	9.03
Fort Drum	2	New York	17,104	13,034	2.41%	1,193	14.34
Calcium	3	New York	3,696	3,548	1.01%	659	5.61
Gouverneur	4	New York	3,673	3,619	0.38%	1,676	2.19
Carthage	5	New York	3,284	3,318	-0.24%	1,354	2.42
West Carthage	6	New York	1,766	1,768	0%	1,350	1.31
Clayton	7	New York	1,706	1,732	-0.35%	1,065	1.60
Adams	8	New York	1,686	1,688	0%	1,167	1.45
Sackets Harbor	9	New York	1,377	1,375	0.07%	597	2.31
Black River	10	New York	1,246	1,262	-0.32%	700	1.78
Philadelphia	11	New York	1,158	1,172	-0.26%	1,209	0.96
Great Bend	12	New York	1,087	1,329	-5.23%	188	5.79
Adams Center	13	New York	1,044	1,000	1.06%	215	4.86
Dexter	14	New York	1,008	1,012	-0.1%	1,514	0.67
Alexandria Bay	15	New York	956	956	0%	1,276	0.75
Brownville	16	New York	944	944	0%	1,513	0.62
Theresa	17	New York	754	760	-0.13%	597	1.26
Pamelia Center	18	New York	742	441	-1.85%	530	1.40
Cape Vincent	19	New York	734	734	0%	1,044	0.70
Lacona	20	New York	668	672	-0.15%	601	1.11
Copenhagen	21	New York	666	660	0.3%	564	1.18
Sandy Creek	22	New York	626	626	0%	464	1.35
Evans Mills	23	New York	617	625	-0.32%	755	0.82
Chaumont	24	New York	605	611	-0.17%	615	0.98
Antwerp	25	New York	514	518	-0.19%	512	1
Hailesboro	26	New York	483	776	-12.97%	103	4.70
Glen Park	27	New York	448	444	0.22%	627	0.71
Felts Mills	28	New York	409	451	-2.39%	698	0.59
La Fargeville	29	New York	327	733	-23.6%	99	3.31
Mannsville	30	New York	324	322	0.31%	361	0.90
Redwood	31	New York	324	483	3.19%	165	1.97
Pierrepont Manor	32	New York	322	416	-6.67%	416	0.77
Belleville	33	New York	299	279	1.7%	454	0.66
Hammond	34	New York	287	285	0.35%	490	0.59
Depauville	35	New York	270	224	-17.93%	27	9.82
Richville	36	New York	260	266	-0.38%	352	0.74
Deferiet	37	New York	258	258	0%	382	0.68
Henderson	38	New York	240	236	0.42%	457	0.53
Rodman	39	New York	233	142	9.39%	1,465	0.16
Thousand Island Park	40	New York	224	155	1.82%	754	0.30
Ellisburg	41	New York	216	214	0.46%	216	1
Plessis	42	New York	196	370	-15.15%	566	0.35
Lorraine	43	New York	146	55	12.31%	298	0.49
Natural Bridge	44	New York	130	228	-15.58%	101	1.28
Oxbow	45	New York	114	122	-1.72%	282	0.40
Fishers Landing	46	New York	46	76	-8%	102	0.45
Herrings	47	New York	0	132	0%	0	0.15
Three Mile Bay	48	New York	0	182	0%	0	0.28

showing: 48 rows

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 Jefferson County, New York?

Watertown is the largest city in Jefferson County.

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

Three Mile Bay is the smallest city in Jefferson County.

How many cities are in Jefferson County?