According to the United States Census Bureau, the CDP covers an area of 0.1 square miles (0.2 km), all of it land.
Demographics
At the 2010 census El Rancho had a population of 124. The population density was . The racial makeup of El Rancho was 71 (57.3%) White, 1 (0.8%) African American, 1 (0.8%) Native American, 0 (0.0%) Asian, 0 (0.0%) Pacific Islander, 49 (39.5%) from other races, and 2 (1.6%) from two or more races. Hispanic or Latino of any race were 117 people (94.4%).
The whole population lived in households, no one lived in non-institutionalized group quarters and no one was institutionalized.
There were 29 households, 12 (41.4%) had children under the age of 18 living in them, 17 (58.6%) were opposite-sex married couples living together, 7 (24.1%) had a female householder with no husband present, 2 (6.9%) had a male householder with no wife present. There were 1 (3.4%)
unmarried opposite-sex partnerships
POSSLQ ( , plural POSSLQs) is an abbreviation (or acronym) for "Person of Opposite Sex Sharing Living Quarters", a term coined in the late 1970s by the United States Census Bureau as part of an effort to more accurately gauge the prevalence of ...
, and 0 (0%) same-sex married couples or partnerships. 3 households (10.3%) were one person and 1 (3.4%) had someone living alone who was 65 or older. The average household size was 4.28. There were 26 families (89.7% of households); the average family size was 4.35.
The age distribution was 35 people (28.2%) under the age of 18, 12 people (9.7%) aged 18 to 24, 31 people (25.0%) aged 25 to 44, 25 people (20.2%) aged 45 to 64, and 21 people (16.9%) who were 65 or older. The median age was 32.5 years. For every 100 females, there were 134.0 males. For every 100 females age 18 and over, there were 117.1 males.
There were 30 housing units at an average density of 416.6 per square mile, of the occupied units 18 (62.1%) were owner-occupied and 11 (37.9%) were rented. The homeowner vacancy rate was 0%; the rental vacancy rate was 8.3%. 74 people (59.7% of the population) lived in owner-occupied housing units and 50 people (40.3%) lived in rental housing units.