Portland, TN 37148 ZIP Code Profile

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Portland, TN

ZIP Code 37148: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Portland, TN 37148

  • ZIP Code Type: STANDARD
  • County: Sumner County
  • Centroid: Latitude 36.568, Longitude -86.491
  • Time Zone: Central Time Zone (UTC -6 hours)
  • Observes DST: Yes

ZIP Code 37148 has segments in 2 Counties (Robertson, Sumner).

  • Businesses Addresses: 590
  • PO Box Addresses: 476
  • Residential Addresses: 9,478
    • Multi-Family Addresses: 125
    • Single Family Addresses: 9,353

The ZIP Code maps and database are updated 4 times per year.
Database updated: July 1, 2020, Maps updated: May 1, 2020.


Portland, TN 37148 Data & Demographics (As of July 1, 2020)


Total Population 25,209 (100%)
Population in Households 25,093 (99.5%)
Population in Families 21,173 (84.0%)
Population in Group Quarters1 116 ( 0.5%)
Population Density 183
Diversity Index2 24


Median Household Income $56,412
Average Household Income $71,759
% of Income for Mortgage4 12%
Per Capita Income $26,009
Wealth Index5 68


Total HU (Housing Units) 9,990 (100%)
Owner Occupied HU 7,165 (71.7%)
Renter Occupied HU 1,970 (19.7%)
Vacant Housing Units 855 ( 8.6%)
Median Home Value $167,002
Average Home Value $193,824
Housing Affordability Index3 202


Total Households 9,135
Average Household Size 2.75
Family Households 6,745
Average Family Size 3
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. 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 races 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.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.


2010-2020 2020-2025
Population 1.15% 1.18%
Households 1.15% 1.17%
Families 0.95% 1.03%
Median Household Income   1.34%
Per Capita Income   1.85%
Owner Occupied HU   1.16%

Portland, TN 37148 - Peer Comparisons by Rank and Percentile

The table below compares 37148 to the other 610 ZIP Codes in Tennessee by rank and percentile using July 1, 2020 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 # 93 85th
Population Density # 197 68th
Median Household Income # 139 77th
Housing Affordability Index # 353 58th
Per Capita Income # 228 63rd
Diversity Index # 243 60th

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

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