| Martinsville, New Jersey | |
| Settlement Type: | Census-designated place |
| Pushpin Map: | USA New Jersey Somerset County#USA New Jersey#USA |
| Pushpin Label: | Martinsville |
| Pushpin Map Caption: | Location in Somerset County##Location in New Jersey##Location in the United States |
| Pushpin Relief: | yes |
| Subdivision Type: | Country |
| Subdivision Name: |  United States |
| Subdivision Type1: | State |
| Subdivision Type2: | County |
| Subdivision Name2: | Somerset |
| Subdivision Type3: | Township |
| Subdivision Name3: | Bridgewater |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 31.67 |
| Area Land Km2: | 31.47 |
| Area Water Km2: | 0.19 |
| Area Total Sq Mi: | 12.23 |
| Area Land Sq Mi: | 12.15 |
| Area Water Sq Mi: | 0.07 |
| Area Water Percent: | 0.62 |
| Population As Of: | 2020 |
| Population Footnotes: | [2] |
| Population Total: | 12147 |
| Population Density Km2: | auto |
| Population Density Sq Mi: | 999.6 |
| Timezone: | Eastern (EST) |
| Utc Offset: | −05:00 |
| Timezone Dst: | Eastern (EDT) |
| Utc Offset Dst: | −04:00 |
| Elevation Footnotes: | [3] |
| Elevation M: | 79 |
| Elevation Ft: | 259 |
| Coordinates Footnotes: | [4] [5] |
| Coordinates: | 40.6029°N -74.5758°W |
| Postal Code Type: | ZIP Code |
| Postal Code: | 08836[6] |
| Area Code: | 908[7] |
| Blank Name: | FIPS code |
| Blank Info: | [8] [9] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 02584010[10] |
Martinsville is an unincorporated community and census-designated place (CDP)[11] located within Bridgewater Township, in Somerset County, in the U.S. state of New Jersey.[12] [13] [14] As of the 2010 United States Census, the CDP's population was 11,980.[15] [16]
Martinsville is located in northeastern Bridgewater near Warren Township; the 08836 ZIP Code also takes in the southern extension of Bernards Township. It is an affluent, predominantly residential area, though it does have its own commercial center along Washington Valley Road, and its own post office.
The Middlebrook encampment was a seasonal encampment of the Continental Army during the American Revolutionary War near Martinsville that straddled the ridge of the First Watchung Mountains. Its position provided a natural fortress not only protecting the Continental Army, but also overlooking the plains towards New Brunswick where the British forces were stationed in 1777.
Tradition holds that it was at the Middlebrook encampment that the first official flag of the United States was unfurled, after a law to adopt a national flag had been passed by Congress on June 14, 1777. By special order of Congress, a Thirteen Star Flag is flown 24 hours a day at the Washington Camp Ground, part of the former Middlebrook encampment, in Bridgewater. Since 1889, the first hoisting of the flag is commemorated annually each July 4 with a changing of the flag, a reading of the United States Declaration of Independence, and the delivery of an historical address.
According to the United States Census Bureau, Martinsville had a total area of 12.398 square miles (32.111 km2), including 12.322 square miles (31.914 km2) of land and 0.076 square miles (0.198 km2) of water (0.62%).[4]
The 2010 United States census counted 11,980 people, 4,331 households, and 3,491 families in the CDP. The population density was . There were 4,461 housing units at an average density of . The racial makeup was 88.45% (10,596) White, 1.31% (157) Black or African American, 0.04% (5) Native American, 8.20% (982) Asian, 0.00% (0) Pacific Islander, 0.42% (50) from other races, and 1.59% (190) from two or more races. Hispanic or Latino of any race were 3.81% (457) of the population.[15]
Of the 4,331 households, 36.2% had children under the age of 18; 71.7% were married couples living together; 6.4% had a female householder with no husband present and 19.4% were non-families. Of all households, 16.6% were made up of individuals and 10.0% had someone living alone who was 65 years of age or older. The average household size was 2.75 and the average family size was 3.10.[15]
24.4% of the population were under the age of 18, 5.8% from 18 to 24, 18.2% from 25 to 44, 35.2% from 45 to 64, and 16.5% who were 65 years of age or older. The median age was 45.9 years. For every 100 females, the population had 95.2 males. For every 100 females ages 18 and older there were 92.4 males.[15]
The Pingry School's upper division for grades 6 to 12 is located in Martinsville.
Little Friends of Jesus Nursery School (preschool, non-parochial) operate under the supervision of Roman Catholic Diocese of Metuchen.[19]
People who were born in, residents of, or otherwise closely associated with Martinsville include: