Allenwood is an unincorporated community and census-designated place (CDP) in Wall Township, Monmouth County, New Jersey, United States. As of the 2020 United States census, the CDP's population was 954. 2020
2020 census
{| class="wikitable sortable" style="text-align:center;"
|+Allenwood CDP, New Jersey – Racial and ethnic composition<br><small></small>
!Race / Ethnicity <small>(NH = Non-Hispanic)</small>
!Pop 2000
!Pop 2010
!style="background-color: #ffffb3;" |Pop 2020
!% 2000
!% 2010
!style="background-color: #ffffb3;" |% 2020
|-
|White alone (NH)
|899
|884
|style='background: #ffffe6; |877
|96.15%
|95.57%
|style='background: #ffffe6; |91.93%
|-
|Black or African American alone (NH)
|0
|1
|style='background: #ffffe6; |2
|0.00%
|0.11%
|style='background: #ffffe6; |0.21%
|-
|Native American or Alaska Native alone (NH)
|1
|0
|style='background: #ffffe6; |0
|0.11%
|0.00%
|style='background: #ffffe6; |0.00%
|-
|Asian alone (NH)
|14
|8
|style='background: #ffffe6; |11
|1.50%
|0.86%
|style='background: #ffffe6; |1.15%
|-
|Native Hawaiian or Pacific Islander alone (NH)
|0
|0
|style='background: #ffffe6; |0
|0.00%
|0.00%
|style='background: #ffffe6; |0.00%
|-
|Other race alone (NH)
|0
|0
|style='background: #ffffe6; |1
|0.00%
|0.00%
|style='background: #ffffe6; |0.10%
|-
|Mixed race or Multiracial (NH)
|5
|6
|style='background: #ffffe6; |32
|0.53%
|0.65%
|style='background: #ffffe6; |3.35%
|-
|Hispanic or Latino (any race)
|16
|26
|style='background: #ffffe6; |31
|1.71%
|2.81%
|style='background: #ffffe6; |3.25%
|-
|Total
|935
|925
|style='background: #ffffe6; |954
|100.00%
|100.00%
|style='background: #ffffe6; |100.00%
|}
2010 census
The 2010 United States census counted 925 people, 309 households, and 259 families in the CDP. The population density was . There were 318 housing units at an average density of . The racial makeup was 97.73% (904) White, 0.11% (1) Black or African American, 0.00% (0) Native American, 0.86% (8) Asian, 0.00% (0) Pacific Islander, 0.43% (4) from other races, and 0.86% (8) from two or more races. Hispanic or Latino of any race were 2.81% (26) of the population.
There were 309 households, out of which 47.2% had children under the age of 18 living with them, 77.7% were married couples living together, 4.2% had a female householder with no husband present, and 15.5% were non-families. 13.6% of all households were made up of individuals, and 4.5% had someone living alone who was 65 years of age or older. The average household size was 3.03 and the average family size was 3.36.