| Official Name: | Marlboro, New Jersey |
| Settlement Type: | Census-designated place |
| Pushpin Map: | USA New Jersey Cumberland County#USA New Jersey#USA |
| Pushpin Label: | Marlboro CDP |
| Pushpin Map Caption: | Location in Cumberland County##Location in New Jersey##Location in the United States |
| Pushpin Relief: | yes |
| Coordinates: | 39.4856°N -75.3197°W |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Cumberland |
| Subdivision Type3: | Township |
| Subdivision Name3: | Stow Creek |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 0.39 |
| Area Land Sq Mi: | 0.39 |
| Area Water Sq Mi: | 0.00 |
| Area Total Km2: | 1.00 |
| Area Land Km2: | 1.00 |
| Area Water Km2: | 0.00 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 127 |
| Population Density Km2: | 127.20 |
| Population Density Sq Mi: | 329.87 |
| Unit Pref: | Imperial |
| Timezone: | Eastern (EST) |
| Utc Offset: | −05:00 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | −04:00 |
| Elevation Ft: | 117 |
| 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: | 2806123 |
Marlboro is a census-designated place (CDP)[4] located in Stow Creek Township on the northwestern edge of Cumberland County, in the U.S. state of New Jersey. It is bordered to the northwest, across Sarah Run, by Quinton Township in Salem County. The CDP contains the unincorporated communities of Marlboro and Campbells Corner.
New Jersey Route 49 passes through the CDP, leading southeast 6miles to Bridgeton, the Cumberland county seat, and northwest 10miles to Salem.
Marlboro was first listed as a CDP prior to the 2020 census.
As of the 2020 United States census, the population was 127.[2]