There are 39 cities in Onondaga 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.)
City | Rank | State | 2024 Population | 2020 Census | Annual Change | Density (mi²) | Area (mi²) |
|---|---|---|---|---|---|---|---|
| Syracuse | 1 | New York | 145,171 | 146,726 | -0.27% | 5,793 | 25.06 |
| Auburn | 2 | New York | 25,692 | 26,855 | -1.12% | 3,082 | 8.34 |
| De Witt | 3 | New York | 11,507 | 10,503 | 1.08% | 1,774 | 6.49 |
| Fulton | 4 | New York | 11,207 | 11,371 | -0.36% | 2,857 | 3.92 |
| Fairmount | 5 | New York | 10,139 | 9,817 | 0.8% | 3,013 | 3.37 |
| Baldwinsville | 6 | New York | 7,583 | 7,806 | -0.73% | 2,377 | 3.19 |
| Radisson | 7 | New York | 7,275 | 6,851 | 0.28% | 1,610 | 4.52 |
| North Syracuse | 8 | New York | 6,773 | 6,731 | 0.15% | 3,409 | 1.99 |
| Solvay | 9 | New York | 6,434 | 6,632 | -0.77% | 3,981 | 1.62 |
| Mattydale | 10 | New York | 5,549 | 6,101 | -2.43% | 2,890 | 1.92 |
| Galeville | 11 | New York | 5,007 | 4,175 | 4.33% | 3,996 | 1.25 |
| Westvale | 12 | New York | 4,872 | 4,994 | -0.61% | 3,612 | 1.35 |
| Chittenango | 13 | New York | 4,783 | 4,889 | -0.56% | 1,926 | 2.48 |
| Brewerton | 14 | New York | 4,753 | 4,549 | 0.38% | 1,501 | 3.17 |
| Manlius | 15 | New York | 4,559 | 4,693 | -0.74% | 2,504 | 1.82 |
| Fayetteville | 16 | New York | 4,139 | 4,261 | -0.74% | 2,386 | 1.74 |
| Lyncourt | 17 | New York | 3,882 | 3,952 | -0.44% | 3,101 | 1.25 |
| Village Green | 18 | New York | 3,793 | 3,701 | 0.61% | 3,287 | 1.15 |
| Minoa | 19 | New York | 3,622 | 3,685 | -0.44% | 2,742 | 1.32 |
| Homer | 20 | New York | 3,041 | 3,183 | -1.17% | 1,580 | 1.93 |
| East Syracuse | 21 | New York | 2,979 | 3,071 | -0.77% | 1,910 | 1.56 |
| Cazenovia | 22 | New York | 2,729 | 2,769 | -0.36% | 1,446 | 1.89 |
| Skaneateles | 23 | New York | 2,511 | 2,545 | -0.36% | 1,765 | 1.42 |
| Lakeland | 24 | New York | 2,502 | 2,524 | -0.2% | 1,678 | 1.49 |
| Seneca Knolls | 25 | New York | 2,357 | 1,759 | 6.12% | 1,860 | 1.27 |
| Liverpool | 26 | New York | 2,234 | 2,297 | -0.71% | 2,975 | 0.75 |
| Nedrow | 27 | New York | 2,216 | 2,286 | -0.76% | 2,304 | 0.96 |
| Phoenix | 28 | New York | 2,194 | 2,222 | -0.32% | 1,874 | 1.17 |
| Weedsport | 29 | New York | 1,754 | 1,809 | -0.79% | 1,797 | 0.98 |
| Melrose Park | 30 | New York | 1,751 | 2,259 | -6.56% | 469 | 3.73 |
| Marcellus | 31 | New York | 1,742 | 1,792 | -0.74% | 2,726 | 0.64 |
| Bridgeport | 32 | New York | 1,519 | 1,341 | -1.04% | 788 | 1.93 |
| Minetto | 33 | New York | 1,375 | 1,485 | -1.93% | 366 | 3.75 |
| Camillus | 34 | New York | 1,287 | 1,223 | 1.26% | 3,170 | 0.41 |
| Jordan | 35 | New York | 1,195 | 1,225 | -0.66% | 1,027 | 1.16 |
| Elbridge | 36 | New York | 944 | 972 | -0.74% | 950 | 0.99 |
| Tully | 37 | New York | 884 | 911 | -0.79% | 1,209 | 0.73 |
| DeRuyter | 38 | New York | 417 | 427 | -0.71% | 1,130 | 0.37 |
| Fabius | 39 | New York | 323 | 333 | -0.92% | 758 | 0.43 |
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.
Syracuse is the largest city in Onondaga County.
Fabius is the smallest city in Onondaga County.
There are 39 cities in Onondaga County, New York.