| City : | Mountain Lakes Borough |
| County : | Calaveras County, Chaves County, Delaware County, Guilford County, Johnson County, Morris County |
| State : | New Jersey (NJ) |
| | |
| Land Area : | 2.62 sq mi |
| Water Area : | 0.27 sq mi |
| Latitude : | 40.8913740 |
| Longitude : | -74.4411141 |
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| Population (2010): | 4,160 |
| Population Estimate (2012) : | 4,206 |
| Population Density : | 1,590.35/sq mi |
| Housing Units (2012) : | 1,363 |
| Median Household Income (2012) : | $159,773 (New Jersey : $71,637, USA : $53,046) |
| Median Family Income (2012) : | $169,219 (New Jersey : $87,389, USA : $64,585) |
| Median House Price (2012) : | $882,400 (New Jersey : $337,900, USA : $181,400) |