Rock Island, TN 38581 ZIP Code Profile

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Rock Island, TN

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ZIP Code 38581: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Rock Island, TN 38581

Acceptable Alternative
Bone Cave, TN 38581

  • ZIP Code Type: STANDARD
  • County: Warren County
  • Centroid: Latitude 35.731, Longitude -85.65
  • Time Zone: Central Time Zone (UTC -6 hours)
  • Observes DST: Yes

ZIP Code 38581 has segments in 3 Counties (DeKalb, Van Buren, Warren).

  • Businesses Addresses: 76
  • PO Box Addresses: 73
  • Residential Addresses: 1,766
    • Multi-Family Addresses: 0
    • Single Family Addresses: 1,766

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

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting demographic data.


38581 ZIP Code Map

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Rock Island, TN 38581 Data & Demographics (As of July 1, 2017)


Total Population 4,096
Daytime Population: Workers 596
Daytime Population: Residents 2,320
Total Daytime Population (TDP) 2,916
Ratio TDP/Total Population1 0.71
Population in Households 4,078
Population in Familes 3,435
Population in Group Qrtrs 18
Population Density2 38
Diversity Index3 22


Median Household Income $36,710
Average Household Income $49,745
Per Capita Income $19,877


Total Housing Units 1,976 (100%)
Owner Occupied HU 1,333 (67.5%)
Renter Occupied HU 297 (15.0%)
Vacant Housing Units 346 (17.5%)
Median Home Value $91,607
Average Home Value $140,304


Total Households 1,630
Average Household Size 2.5
Family Households 1,177
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 0.05% 0.27%
Households 0.07% 0.24%
Families -0.09% 0.15%
Median Household Income   1.11%
Per Capita Income   3.17%

Rock Island, TN 38581 - Peer Comparisons by Rank and Percentile

The table below compares 38581 to the other 616 ZIP Codes in Tennessee 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 # 335 46th
Population Density # 462 25th
Diversity Index # 257 58th
Median Household Income # 442 28th
Per Capita Income # 439 29th

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

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