Castell, TX 76831 ZIP Code Profile

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Castell, TX

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ZIP Code 76831: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Castell, TX 76831

  • ZIP Code Type: STANDARD
  • County: Llano County
  • Centroid: Latitude 30.695, Longitude -98.923
  • Time Zone: Central Time Zone (UTC -6 hours)
  • Observes DST: Yes

ZIP Code 76831 has segments in 2 Counties (Llano, Mason).

  • Businesses Addresses: 3
  • PO Box Addresses: 47
  • Residential Addresses: 9
    • Multi-Family Addresses: 0
    • Single Family Addresses: 9

The ZIP Code maps and database are updated 4 times per year.
Database updated: February 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic Data

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76831 ZIP Code Map

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Castell, TX 76831 Data & Demographics (As of July 1, 2017)


Total Population 55
Daytime Population: Workers 1
Daytime Population: Residents 24
Total Daytime Population (TDP) 25
Ratio TDP/Total Population1 0.45
Population in Households 55
Population in Familes 46
Population in Group Qrtrs 0
Population Density2 6
Diversity Index3 23


Median Household Income $53,427
Average Household Income $75,115
Per Capita Income $34,143


Total Housing Units 37 (100%)
Owner Occupied HU 22 (59.5%)
Renter Occupied HU 3 ( 8.1%)
Vacant Housing Units 12 (32.4%)
Median Home Value $178,571
Average Home Value $253,409


Total Households 25
Average Household Size 2.2
Family Households 18
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 1.61% 1.76%
Households 1.78% 1.55%
Families 1.64% 1.09%
Median Household Income   1.07%
Per Capita Income   3.29%

Castell, TX 76831 - Peer Comparisons by Rank and Percentile

The table below compares 76831 to the other 1,848 ZIP Codes in Texas by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 1791 3rd
Population Density # 1614 13th
Diversity Index # 1782 4th
Median Household Income # 732 60th
Per Capita Income # 347 81st

Additional comparisons and rankings can be made with a VERY EASY TO USE Texas Census Data Comparison Tool.

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