| Official Name: | Seeley, New Jersey |
| Settlement Type: | Census-designated place |
| Pushpin Map: | USA New Jersey Cumberland County#USA New Jersey#USA |
| Pushpin Label: | Seeley |
| Pushpin Map Caption: | Location in Cumberland County##Location in New Jersey##Location in the United States |
| Pushpin Relief: | yes |
| Coordinates: | 39.4875°N -75.2553°W |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Cumberland |
| Subdivision Type3: | Township |
| Subdivision Name3: | Upper Deerfield |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 0.58 |
| Area Land Sq Mi: | 0.56 |
| Area Water Sq Mi: | 0.02 |
| Area Total Km2: | 1.51 |
| Area Land Km2: | 1.44 |
| Area Water Km2: | 0.06 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 152 |
| Population Density Km2: | 105.26 |
| Timezone: | Eastern (EST) |
| Utc Offset: | −05:00 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | −04:00 |
| Elevation Ft: | 55 |
| Postal Code Type: | ZIP Code |
| Postal Code: | 08302 (Bridgeton) |
| Area Code: | 856 |
| Blank Name: | FIPS code |
| Blank Info: | [3] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2806184 |
| Unit Pref: | Imperial |
| Population Density Sq Mi: | 272.40 |
Seeley is a census-designated place (CDP) in Cumberland County, in the U.S. state of New Jersey. It is in the northern part of the county, on the west side of Upper Deerfield Township. The western border of the CDP is the Cohansey River, which forms the border with Hopewell Township to the west. Seeley is 5miles north of Bridgeton, the county seat, and west of Vineland.
Seeley was first listed as a CDP prior to the 2020 census.
As of the 2020 census, the population of Seeley was 152.[2]