Smithfield, ME 04978 ZIP Code Profile

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Smithfield, ME

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ZIP Code 04978: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Smithfield, ME 04978

  • ZIP Code Type: STANDARD
  • County: Somerset County
  • Centroid: Latitude 44.618, Longitude -69.804
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 33
  • PO Box Addresses: 76
  • Residential Addresses: 374
    • Multi-Family Addresses: 0
    • Single Family Addresses: 374

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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04978 ZIP Code Map

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Smithfield, ME 04978 Data & Demographics (As of July 1, 2017)


Total Population 1,017
Daytime Population: Workers 314
Daytime Population: Residents 476
Total Daytime Population (TDP) 790
Ratio TDP/Total Population1 0.78
Population in Households 1,017
Population in Familes 804
Population in Group Qrtrs 0
Population Density2 51
Diversity Index3 9


Median Household Income $53,648
Average Household Income $61,113
Per Capita Income $26,741


Total Housing Units 732 (100%)
Owner Occupied HU 384 (52.5%)
Renter Occupied HU 61 ( 8.3%)
Vacant Housing Units 287 (39.2%)
Median Home Value $152,475
Average Home Value $183,138


Total Households 445
Average Household Size 2.29
Family Households 307
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 -0.22% -0.16%
Households -0.18% -0.18%
Families -0.31% -0.26%
Median Household Income   1.47%
Per Capita Income   2.24%

Smithfield, ME 04978 - Peer Comparisons by Rank and Percentile

The table below compares 04978 to the other 399 ZIP Codes in Maine 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 # 279 30th
Population Density # 206 48th
Diversity Index # 239 40th
Median Household Income # 123 69th
Per Capita Income # 176 56th

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

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