According to the historical population data for the ZIP code 78631 in Harper, Texas, the area has experienced fluctuations in population and population density over the years from 2010 to 2022. The population reached a peak of 2,134 in 2020 but declined to 1,841 by 2022. The corresponding population density in 2022 was 9.18 people per square mile, which is extremely low compared to the national average.

Given the ZIP code's size of 200.44 square miles and the 2022 population of 1,841, the area can be classified as remote rural. Remote rural areas are characterized by very sparse populations, minimal infrastructure, and limited services. The lifestyle in such areas is predominantly agricultural or undeveloped, with a focus on privacy and self-sustainability. Outdoor and recreational activities are common due to the natural environment.

The estimated number of housing units corresponding to the 2022 population is 705, based on the national average household size of 2.61. This suggests that the area has a low housing density, with large expanses of land per household, likely more than 5 acres.