| Official Name: | Rainbow Lakes, New Jersey |
| Settlement Type: | Census-designated place |
| Pushpin Map: | USA New Jersey Morris County#USA New Jersey#USA |
| Pushpin Label: | Rainbow Lakes |
| Pushpin Map Caption: | Location in Morris County##Location in New Jersey##Location in the United States |
| Pushpin Relief: | yes |
| Coordinates: | 40.8753°N -74.4522°W |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Morris |
| Subdivision Type3: | Township |
| Subdivision Name3: | Parsippany–Troy Hills |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 1.20 |
| Area Land Sq Mi: | 1.10 |
| Area Water Sq Mi: | 0.10 |
| Area Total Km2: | 3.11 |
| Area Land Km2: | 2.84 |
| Area Water Km2: | 0.27 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 1255 |
| Population Density Km2: | 441.87 |
| Population Density Sq Mi: | 1144.03 |
| Timezone: | Eastern (EST) |
| Utc Offset: | −05:00 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | −04:00 |
| Elevation Ft: | 520 |
| Postal Code Type: | ZIP Codes |
| Postal Code: | 07054 (Parsippany) 07834 (Denville) |
| Area Code: | 973/862 |
| Blank Name: | FIPS code |
| Blank Info: | [3] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2806173 |
Rainbow Lakes is a census-designated place (CDP)[4] located in Parsippany–Troy Hills Township, Morris County, New Jersey, United States. It is in the western part of the township and consists of housing built around a cluster of lakes including Rainbow Lake, plus a zone of commercial buildings to the east of the lakes. As of the 2020 census, the population of the CDP was 1,255.[2]
Rainbow Lakes is in eastern Morris County and is bordered to the east by Parsippany proper, to the north by the borough of Mountain Lakes, and to the west by Denville Township. The northern edge of the CDP is formed by U.S. Route 46 and the NJ Transit Montclair-Boonton Line, and Interstate 80 forms the southern edge. It is northwest of Newark and west of the George Washington Bridge over the Hudson River.
According to the U.S. Census Bureau, the Rainbow Lakes CDP has a total area of 1.2sqmi, of which 1.1sqmi are land and 0.1sqmi, or 8.51%, are water. The lakes for which the community is named include Rainbow Lake, Upper Rainbow Lake, Mirror Lake, Twilight Lake, Cabin Lake, and Fern Lake.[5]
Rainbow Lakes was first listed as a CDP prior to the 2020 census.