Smithfield, NC 27577 ZIP Code Profile

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Smithfield, NC

ZIP Code 27577: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Smithfield, NC 27577

  • ZIP Code Type: STANDARD
  • County: Johnston County
  • Centroid: Latitude 35.512, Longitude -78.347
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 1,230
  • PO Box Addresses: 719
  • Residential Addresses: 9,237
    • Multi-Family Addresses: 149
    • Single Family Addresses: 9,088

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


27577 ZIP Code Map

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Smithfield, NC 27577 Data & Demographics (As of July 1, 2018)


Total Population 24,333
Population in Households 23,078
Population in Familes 18,893
Population in Group Qrtrs 1,255
Population Density2 236
Diversity Index3 68


Median Household Income $43,360
Average Household Income $57,717
Per Capita Income $22,100


Total Housing Units 9,726 (100%)
Owner Occupied HU 5,378 (55.3%)
Renter Occupied HU 3,386 (34.8%)
Vacant Housing Units 962 ( 9.9%)
Median Home Value $147,195
Average Home Value $180,309


Total Households 8,764
Average Household Size 2.63
Family Households 5,814
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 0.84% 1.05%
Households 0.7% 0.96%
Families 0.5% 0.85%
Median Household Income   3.28%
Per Capita Income   2.66%

Smithfield, NC 27577 - Peer Comparisons by Rank and Percentile

The table below compares 27577 to the other 775 ZIP Codes in North Carolina by rank and percentile using July 1, 2018 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 # 159 80th
Population Density # 288 63rd
Diversity Index # 88 89th
Median Household Income # 446 42nd
Per Capita Income # 509 34th

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

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