Herlong first appeared as a
census designated place in the
2010 U.S. census. The whole population lived in households. There were 112 households, out of which 45 (40.2%) had children under the age of 18 living in them, 30 (26.8%) were married-couple households, 10 (8.9%) were
cohabiting couple households, 17 (15.2%) had a female householder with no partner present, and 55 (49.1%) had a male householder with no partner present. 39 households (34.8%) were one person, and 19 (17.0%) were one person aged 65 or older. The average household size was 2.12. The age distribution was 57 people (24.1%) under the age of 18, 17 people (7.2%) aged 18 to 24, 59 people (24.9%) aged 25 to 44, 60 people (25.3%) aged 45 to 64, and 44 people (18.6%) who were 65years of age or older. The median age was 40.8years. For every 100 females, there were 123.6 males. reported that Herlong had a population of 298. The population density was . The racial makeup of Herlong was 187 (62.8%)
White, 38 (12.8%)
African American, 16 (5.4%)
Native American, 1 (0.3%)
Asian, 3 (1.0%)
Pacific Islander, 9 (3.0%) from
other races, and 44 (14.8%) from two or more races.
Hispanic or
Latino of any race were 46 persons (15.4%). The Census reported that 293 people (98.3% of the population) lived in households, 5 (1.7%) lived in non-institutionalized group quarters, and 0 (0%) were institutionalized. There were 116 households, out of which 46 (39.7%) had children under the age of 18 living in them, 32 (27.6%) were
opposite-sex married couples living together, 25 (21.6%) had a female householder with no husband present, 9 (7.8%) had a male householder with no wife present. There were 16 (13.8%)
unmarried opposite-sex partnerships, and 1 (0.9%)
same-sex married couples or partnerships. 35 households (30.2%) were made up of individuals, and 5 (4.3%) had someone living alone who was 65 years of age or older. The average household size was 2.53. There were 66
families (56.9% of all households); the average family size was 3.21. The population was spread out, with 91 people (30.5%) under the age of 18, 22 people (7.4%) aged 18 to 24, 96 people (32.2%) aged 25 to 44, 80 people (26.8%) aged 45 to 64, and 9 people (3.0%) who were 65 years of age or older. The median age was 31.5 years. For every 100 females, there were 101.4 males. For every 100 females age 18 and over, there were 97.1 males. There were 139 housing units at an average density of , of which 0 (0%) were owner-occupied, and 116 (100%) were occupied by renters. The homeowner vacancy rate was 0%; the rental vacancy rate was 14.1%. 0 people (0% of the population) lived in owner-occupied housing units and 293 people (98.3%) lived in rental housing units. ==Government==