Home > ME > Somerset County > Smithfield > Zip 04978

Zip Code 04978 — Smithfield, ME

04978 is a ZIP Code associated with Smithfield, ME, located within Somerset. 04978 ranks #18 out of 25 ZIP codes in Somerset County by population (and #285 out of 426 in ME). The area supports an estimated population of 856 residents across Data Pending housing units, with a population density of 16.6 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (44.634660, -69.807890)

Data MetricLocal Statistic
Postal / Zip Code04978
Primary CitySmithfield
State / ProvinceME
CountySomerset
Total Population856
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density16.6 people/sq mi
TimezoneAmerica/New_York

How 04978 Compares

MetricZIP 04978Somerset CountyME State Average
Population85650,691 (Total)1,387,734 (Total)
Average ZIP IncomeData PendingN/AN/A
Population Density16.6 /sq mi----
County Pop Rank#18 of 25----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 04963Oakland4.7 mi7,524N/A
Zip 04957Norridgewock5.2 mi4,006N/A
Zip 04937Fairfield6.5 mi6,358N/A
Zip 04918Belgrade Lakes6.5 miN/AN/A
Zip 04944Hinckley8.9 mi140N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →