| City: | Plymouth, Utah |
| County: | Box Elder County |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 10:14:12 AM |
| Population: | 505 [See All] |
| Area Code: | 435 |
| Classification: | PO Box |
| Coordinates: | 41.8903, -112.1389 |
| Land Area: | 35.889 sq mi |
| Quick Link: |
Plymouth is a small rural town in northern Utah's Box Elder County, where all 505 residents receive mail exclusively through PO Boxes. This is a PO Box Only Zone. There's no alternative mail delivery across the community's 9.4 square miles.
The Plymouth post office maintains 199 PO Boxes for 165 occupied homes, an adoption rate of 1.21x. This slightly elevated ratio means the post office serves not just local households but also businesses, farms, and residents from surrounding areas. Rural carrier routes deliver to some addresses, but the core service model centers on PO Box pickup.
Plymouth's address system uses Utah's distinctive numbered grid pattern: streets like W 20000 N and N 5200 W. Highway 13 runs through the area, connecting Plymouth to nearby communities. The median age of 36.9 years and household income of $84,107 point to a stable, working-age population. Nearly all residents (96%) are White, and 23% work from home.
With just 15 businesses employing 854 people, Plymouth appears to be home to at least one significant employer relative to its population of 505. Home values average $357,100, and 87% of occupied homes are owner-occupied (143 of 165). This is a place where families stay put.
Standard Address Format:
[Recipient Name]
PO Box [Number]
Plymouth, UT 84330Some addresses may use rural route numbers, but PO Box is the primary mailing method for this community.
Street names follow Utah's numbered grid addressing system, with Highway 13 providing the main corridor.
ZIP Code 84330 has 505 residents and 165 households (average 3.06 persons per household). The median age is 36.9 years, older than the state (31.3) and slightly younger than the nation (38.8). The gender split is 52.3% male and 47.7% female, which is higher than the national male share (49.1%), making this a male-majority area. Largest groups are White (96.0%, much higher than the state average of 78.7% and well above the national average of 61.6%) and Hispanic or Latino (4.4%); Hispanic or Latino residents make up 4.4%, which is much lower than the national average (18.7%).
Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship
| 2020 Population: | 505Source: Census DHC |
| 2024 ACS Population Estimate: | 364Source: Census ACS |
| 2026 ZC Population Estimate: | 0Source: ZIP-Codes.com |
| Population Density: | 14.1 people per sq mile |
| Average Income: | $86,518Source: Census ACS |
| Households: | 165Source: Census DHC |
| Average House Value: | $402,500Source: Census ACS |
| Persons Per Household: | 3.06Source: Census DHC |
| Average Family Size: | 2.82Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 341 | 315 | 443 | 401 | 410 | 431 | 437 | 348 | 361 | 380 | 359 | 371 | 411 | 364 |
| Decennial Census | 502 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 505 | -- | -- | -- | -- |
Median Age: 36.9
Male Median Age: 36.4
Female Median Age: 37.5
| Group | < 5 | 5-9 | 10-14 | 15-19 | 20-24 | 25-29 | 30-34 | 35-39 | 40-44 | 45-49 | 50-54 | 55-59 | 60-64 | 65-69 | 70-74 | 75-79 | 80-84 | 85+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Male | 9 | 28 | 39 | 18 | 16 | 8 | 10 | 18 | 30 | 14 | 13 | 13 | 11 | 3 | 17 | 10 | 6 | 1 |
| Female | 19 | 19 | 21 | 18 | 12 | 11 | 10 | 21 | 14 | 19 | 11 | 10 | 10 | 14 | 7 | 14 | 3 | 8 |
| Total | 28 | 47 | 60 | 36 | 28 | 19 | 20 | 39 | 44 | 33 | 24 | 23 | 21 | 17 | 24 | 24 | 9 | 9 |
| White: | 485 | 94.73% |
| Black: | 0 | 0% |
| Hispanic:* | 22 | 4.30% |
| Asian: | 0 | 0% |
| American Indian: | 1 | 0.20% |
| Hawaiian: | 0 | 0% |
| Other: | 4 | 0.78% |
| Total: | 512 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 264 | 52.28% | 36.4 years |
| Females: | 241 | 47.72% | 37.5 years |
| Total: | 505 | 100% | 36.9 years |
| Native, born in the United States: | 363 | 99.73% |
| Native, born in PR, Island Areas, or abroad: | 0 | 0.00% |
| Foreign born, naturalized U.S. citizen: | 0 | 0.00% |
| Foreign born, not a U.S. citizen: | 1 | 0.27% |
| Total Population: | 364 | 100% |
| Total Native Population: | 363 | 99.73% |
| Total Foreign-born Population: | 1 | 0.27% |
In 2024, the Median household income is $86,518, which is considerably higher than the national median ($80,734), is up $31,268 (56.6%) since 2011 and above its 2019 pre-pandemic level by $27,212. Family households earn a median of $102,143 versus $54,219 for nonfamily households (a difference of $47,924). By gender, male median income is $63,173 and female is $34,896, which is well under the national female median ($55,274), with a current gap of $28,277 that has widened from 2011 to 2024. The labor-force participation rate is 63.8%, which is about the same as the national rate (63.5%). The unemployment rate is 2.6%, which is markedly below the national rate (5.2%). The largest occupation group is Production (30.4%).
Explore More:Income Over TimeHousehold IncomeEmployment StatusBy Occupation
| Income Type | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Household Income | $55,250 | $58,281 | $59,700 | $60,875 | $59,750 | $60,278 | $60,833 | $59,028 | $59,306 | $63,036 | $67,917 | $72,917 | $84,107 | $86,518 |
| Median Family Income | $55,563 | $59,219 | $60,500 | $63,281 | $61,750 | $64,250 | $62,115 | $60,833 | $62,656 | $70,104 | $73,295 | $81,167 | $100,833 | $102,143 |
| Median NonFamily Income | $26,607 | $26,667 | $38,750 | $26,250 | $0 | $23,250 | $28,750 | $30,625 | $28,750 | $37,083 | $45,536 | $42,250 | $53,125 | $54,219 |
| Median Male Income | $42,500 | $44,773 | $47,750 | $45,893 | $45,000 | $44,583 | $45,625 | $51,500 | $50,625 | $53,516 | $55,500 | $61,705 | $63,021 | $63,173 |
| Median Female Income | $24,063 | $33,906 | $32,750 | $33,250 | $36,250 | $37,031 | $35,625 | $38,281 | $41,250 | $41,250 | $38,250 | $30,000 | $35,417 | $34,896 |
| Employed: | 191 | 62.21% |
| Unemployed: | 5 | 1.63% |
| Not In Labor Force: | 111 | 36.16% |
| Total: | 307 | 100% |
| Management, business, science, and arts: | 37 | 19.37% |
| Service: | 30 | 15.71% |
| Sales and Office: | 31 | 16.23% |
| Natural resources, construction, and maintenance: | 35 | 18.32% |
| Production, transportation, and material moving: | 58 | 30.37% |
| Total Civilian Employed Population: | 191 | 100% |
In 2024, the median home value is $402,500, which is considerably higher than the national median ($332,700), is up $284,500 (241.10%) since 2011 and above its 2019 pre-pandemic level by $222,100. The median gross rent is $0, which is well under the national median ($1,413), is down $579 (100.00%) since 2011 and below its 2019 pre-pandemic level by $738. Of occupied housing, owners make up 93.98% (66.40% with a mortgage, 33.60% free-and-clear) and renters 6.02% - making this ZIP Code under national rental averages. The vacancy rate is 4.32%, which is considerably lower than the national rate (10.12%).
Explore More:Compare Home ValueHome Value Over TimeRent & Over TimeHousing Occupancy
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Home Value | $118,000 | $120,100 | $134,700 | $129,500 | $139,600 | $150,400 | $157,200 | $169,400 | $180,400 | $209,800 | $228,300 | $289,300 | $357,100 | $402,500 |
| Less than $500: | 0 | 0.00% |
| $500 to $999: | 6 | 75.00% |
| $1,000 to $1,499: | 0 | 0.00% |
| $1,500 to $1,999: | 0 | 0.00% |
| $2,000 to $2,499: | 0 | 0.00% |
| $2,500 to $2,999: | 0 | 0.00% |
| $3,000 or more: | 0 | 0.00% |
| No Rent: | 2 | 25.00% |
| Total: | 8 | 100% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Rent | $579 | $588 | $642 | $642 | $0 | $675 | $800 | $675 | $738 | $950 | $0 | $0 | $588 | $0 |
| Owner Occupied (with mortgage): | 83 | 62.41% |
| Owner Occupied (free and clear, no mortgage): | 42 | 31.58% |
| Renter Occupied: | 8 | 6.02% |
| Total Occupied Housing Units: | 133 | 100% |
| Occupied Housing Units: | 133 | 95.68% |
| Vacant Housing Units (not graphed): | 6 | 4.32% |
| Total Housing Units: | 139 | 100% |
| Single-Family Units: | 135 | 97.12% |
| Multi-Family Units: | 0 | 0.00% |
| Other Units: | 4 | 2.88% |
| Total Housing Units: | 139 | 100% |
In 2024, 14.20% of adults (25+) have a bachelor's degree or higher, which is far lower than the national rate (35.70%). High school or higher is 91.90%, which is comparable to the national rate (89.60%). The uninsured rate is 3.80%, which is far lower than the national rate (8.40%). The share of people in poverty is 2.90%, which is far lower than the national rate (8.80%), down 7.10 percentage points since 2011 and below its 2019 pre-pandemic level by 0.20 percentage points. This points to a pronounced improvement in local conditions - rising incomes, firmer consumer demand, and a stronger tax base. Among residents ages 3+, the largest enrollment group is high school (32.81%). College enrollment is 25.00%, which is comparable to the national rate (26.70%), meaning the community mirrors broader higher-education participation.
Explore More:Educational AttainmentHealth InsurancePoverty Over TimeSchool Enrollment
| Less than 9th grade: | 2 | 0.77% |
| 9th to 12th grade, no diploma: | 19 | 7.31% |
| High school graduate (includes equivalency): | 113 | 43.46% |
| Some college, no degree: | 82 | 31.54% |
| Associate's degree: | 7 | 2.69% |
| Bachelor's degree: | 18 | 6.92% |
| Graduate or professional degree: | 19 | 7.31% |
| Total: | 260 | 100% |
| High school or higher: | 239 | 91.92% |
| Bachelor's degree or higher: | 37 | 14.23% |
| Private Insurance: | 278 | 68.81% |
| Public Insurance: | 112 | 27.72% |
| No Insurance: | 14 | 3.47% |
| Total: | 404 | 100% |
| Has Health Insurance: | 390 | 96.53% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % of People in Poverty | 10.7% | 8.3% | 7.7% | 8.0% | 7.5% | 8.8% | 10.8% | 4.1% | 3.8% | 2.7% | 1.9% | 3.7% | 3.6% | 2.9% |
Note: Counts of Families & People in poverty are not published at the ZIP Code level due to small sample sizes. Percentages shown are survey estimates from the American Community Survey (ACS). They may differ from official poverty statistics. The U.S. Census Bureau defines poverty status by comparing a family's or individual's total income with federal poverty thresholds that vary by family size and composition.
| Nursery School, Preschool: | 7 | 10.94% |
| Kindergarten: | 1 | 1.56% |
| Elementary school (grades 1-8): | 19 | 29.69% |
| High school (grades 9-12): | 21 | 32.81% |
| College or graduate school: | 16 | 25.00% |
| Total: | 64 | 100% |
| Early Childhood: | 8 | 12.50% |
| K-12 (Primary & Secondary School): | 41 | 64.06% |
ZIP Code 84330 supports both business and residential activity. According to the Business Census (2024), there are 18 business establishments, employing about 969 people with an annual payroll of $105,606,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 210Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 18Source: CBP |
| 1st Quarter Payroll: | $33,618,000Source: CBP |
| Annual Payroll: | $105,606,000Source: CBP |
| # of Employees: | 969Source: CBP |
ZIP Code 84330 is located in Box Elder County, Utah, within the Brigham City, UT-ID Metropolitan Statistical Area (CBSA 14940) and Utah's 1st Congressional District. This Micro area has a population of 49,975 people, about 1.01% of whom live in ZIP Code 84330. It covers 35.889 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Brigham City, UT-IDSource: Census |
| CBSA Number: | 14940Source: Census |
| CBSA Type: | MicroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 49,975Source: Census |
| MSA: | Source: Census |
| Land Area: | 35.889 sq miSource: Census |
| Water Area: | --Source: Census |
| Congressional District: | 01Source: USPS |
| Congressional Land Area: | 19560.79 sq miSource: Census |
| PMSA: | Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 4961260Source: Census |
| Place Name: | Plymouth town; UtahSource: Census |
We could not locate which school district 84330 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on March 1, 2026.