Marine on St. Croix, MN demographics:
population, income, and more

Total population
740
3.9% year-over-year change
Median household income
$126,250/yr
2.0% year-over-year change
Housing units
337
1.2% year-over-year change

Marine on St. Croix population

How many people live in Marine on St. Croix

Marine on St. Croix is home to 740 residents, according to the most recent Census data. Gender-wise, 49.7% of Marine on St. Croix locals are male, and 50.3% are female.

Total population
740
3.9% year-over-year change
Gender ratio
Male
49.7%
368
Female
50.3%
372
Value Percent YoY change
Male 368 49.7% 4.2%
Female 372 50.3% 3.6%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Marine on St. Croix is 57, with the population distributed as follows: about 13.1% are children under 15, then 8.2% are in the 15 to 24 age group. Adults between 25 and 44 make up 12.7% of the population, while another 31% fall into the 45 to 64 bracket. Finally, around 35% are 65 or older.

Median age
57.3
Age breakdown
Under 15
13.1%
15 to 24
8.2%
25 to 44
12.7%
45 to 64
31%
Over 65
35%
Value Percent YoY change
Under 15 97 13.1% 9.0%
15 to 24 61 8.2% 3.4%
25 to 44 94 12.7% 5.6%
45 to 64 229 31% 0.4%
Over 65 259 35% 4.9%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Marine on St. Croix, 95.8% of the population are US-born citizens, while 2.8% have gained naturalized citizenship. At the same time, 1.4% of residents are non-citizens. There’s also a share of 3.2% that includes residents with two or more races.

Citizenship
U.S.-born citizens
95.8%
Non-U.S.-born citizens
2.8%
Non-citizens
1.4%
Value Percent YoY change
U.S.-born citizens 709 95.8% 3.2%
Non-U.S.-born citizens 21 2.8% 40.0%
Non-citizens 10 1.4% 0.0%
Racial breakdown
White
94.6%
Black or African American
0%
American Indian and Alaska Native
0.1%
Asian
2%
Native Hawaiian and other Pacific Islander
0%
Two or more races
3.2%
Other
0%
Value Percent
White 700 94.6%
American Indian and Alaska Native 1 0.1%
Asian 15 2%
Two or more races 24 3.2%

Households in Marine on St. Croix

A peek inside Marine on St. Croix households

Marine on St. Croix has 321 households, with an average of 2 members in each. Of these, 68.8% are families, while the remaining 31.2% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
321
4.2% year-over-year change
Average people per household
2
Non-family households
100
Family households
221
Value Percent YoY change
Non-family households 100 31.2% 8.7%
Family households 221 68.8% 2.3%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Marine on St. Croix

The housing landscape of Marine on St. Croix

Marine on St. Croix's housing consists of 337 units, with 91.4% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 6.8% and offer a more compact, shared living style.

Housing units
337
1.2% year-over-year change
Housing types
Value Percent
1 unit, detached 308 91.4%
1 unit, attached 23 6.8%
5 to 9 units 6 1.8%
Homes built since 2020
0
% year-over-year change

The age of buildings in Marine on St. Croix

In Marine on St. Croix, the median construction year is 1962. About 43.6% of homes were built before the 1940s, with another 2.4% going up by 1949. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 147 43.6% -8.1%
Built between 1940 and 1949 8 2.4% 33.3%
Built between 1950 and 1959 9 2.7% -18.2%
Built between 1960 and 1969 26 7.7% 8.3%
Built between 1970 and 1979 42 12.5% -6.7%
Built between 1980 and 1989 11 3.3% 10.0%
Built between 1990 and 1999 45 13.4% 32.4%
Built between 2000 and 2009 42 12.5% 10.5%
Built between 2010 and 2019 7 2.1% 40.0%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Marine on St. Croix occupancy rates

Out of the 321 occupied housing units in Marine on St. Croix, 94.4% are owner-occupied, while 5.6% are lived in by tenants. Meanwhile, 4.7% of all homes on the local market sit vacant.

Occupied housing units
321
4.2% year-over-year change
Occupancy breakdown
Renter occupied
18
Owner occupied
303
Value Percent YoY
change
Renter occupied 18 5.6% 0.0%
Owner occupied 303 94.4% 4.5%
Unoccupied housing units
4.7%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Marine on St. Croix housing costs

Housing costs in Marine on St. Croix come to a median of $1,838 per month, while tenants specifically pay a median gross rent of $2,250.

Median housing costs per month
$1,838/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Marine on St. Croix
$2,250/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Marine on St. Croix

Marine on St. Croix education at a glance

About 8.2% of the population in Marine on St. Croix went to high school, while 17.6% pursued college studies. Another 6.7% earned an associate degree and 35.4% hold a bachelor’s. Meanwhile, 31.3% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 5 0.8% 66.7%
High school diploma 50 8.2% -12.3%
College diploma 108 17.6% 16.1%
Associate degree 41 6.7% -8.9%
Bachelor's degree 217 35.4% -4.8%
Graduate degree 192 31.3% 13.6%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Marine on St. Croix

How much people earn in Marine on St. Croix

The average annual household income in Marine on St. Croix was $148,023 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +0.4% change from the previous year. At the same time, the median income stood at $126,250, reflecting a +2% shift over the same period.

Average household income in Marine on St. Croix
$148,023/year
0.4% year-over-year change
Median household income in Marine on St. Croix
$126,250/year
2.0% year-over-year change

Marine on St. Croix income by age

In Marine on St. Croix, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $128,750. Those with someone between 45 and 64 in charge, often well established professionally, earn $161,875 overall. Overall, 97.2% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
25 - 44 $128,750 -28.2%
45 - 64 $161,875 12.6%
Over 65 $96,786 2.2%
Above poverty level
716
Below poverty level
21
Value Percent YoY
change
Above poverty level 716 97.2% 3.6%
Below poverty level 21 2.8% 16.7%

Average renter income in Marine on St. Croix

To get a better sense of what renters earn on average in Marine on St. Croix, their median household income was $69,750 according to 2022 Census data. In addition, the rent-to-income ratio in the area, at 38.7%, shows what portion of their earnings goes toward housing expenses.

Renter median household income
$69,750
Rent-to-income ratio
38.7%
Understanding the rent-to-income ratio can help renters gauge if local housing costs align with their earnings. A ratio under 30% usually signals affordability, while exceeding this mark means rent is taking a larger-than-recommended bite out of income. That could make it harder for you to cover other costs like transportation, healthcare, or child care.

Employment in Marine on St. Croix

Workforce and job types in Marine on St. Croix

The job market in Marine on St. Croix is powered by 358 working residents, spread across a range of industries and roles. 89.4% of the working population are employed in professional or administrative positions, while 10.6% are in hands-on or service-based jobs. Also, 15.4% run their own businesses, 56.2% are employed by private companies, and 17.3% work in the public sector.

Workforce demographics

Working population
358
3.8% year-over-year change
White collar
320
Blue collar
38
Value Percent YoY change
White collar 320 89.4% 2.6%
Blue collar 38 10.6% 15.2%
Employer type
Self employees
15.4%
Private companies
56.2%
Governmental workers
17.3%
Not for profit companies
11.2%
Value Percent YoY change
Self employees 55 15.4% 14.6%
Private companies 201 56.2% -1.0%
Governmental workers 62 17.3% 12.7%
Not for profit companies 40 11.2% 2.6%

Transportation in Marine on St. Croix

How people get around in Marine on St. Croix

Commuting methods vary: 63.3% of residents travel by personal vehicle and 4.3% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 219 63.3% 0.5%
Bicycle 5 1.4% 150.0%
Walk 15 4.3% 66.7%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Marine on St. Croix by zipcode?

Zipcode Population Number of households Median income Average income
55047 2,244 947 $107,361 $176,352

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FAQs about Marine on St. Croix demographics 

What is the total population of Marine on St. Croix?

Marine on St. Croix has a total population of 740 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +3.9% compared to a year ago.

What is the gender ratio in Marine on St. Croix?

The gender ratio in Marine on St. Croix is as follows:
  • 49.7% males (368 residents)
  • 50.3% females (372 residents)

What is the median age in Marine on St. Croix?

The median age in Marine on St. Croix is 57.3.

What is the age distribution of the population in Marine on St. Croix?

The age distribution in Marine on St. Croix is as follows:
  • Under 15: 13.1% (97 residents)
  • Ages 15-24: 8.2% (61 residents)
  • Ages 25-44: 12.7% (94 residents)
  • Ages 45-64: 31% (229 residents)
  • Over 65: 35% (259 residents)

What is the racial and ethnic makeup of Marine on St. Croix?

The racial and ethnic makeup of Marine on St. Croix is as follows:
  • White: 94.6% (700 residents)
  • Black or African American: 0% (0 residents)
  • American Indian and Alaska Native: 0.1% (1 residents)
  • Asian: 2% (15 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 3.2% (24 residents)
  • Other: 0% (0 residents)

What percentage of the population in Marine on St. Croix are U.S.-born citizens?

U.S.-born citizens represent 95.8% of the population in Marine on St. Croix.

How many housing units are there in Marine on St. Croix?

There are 337 housing units in Marine on St. Croix, reflecting a +1.2% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Marine on St. Croix and what is the average household size?

Marine on St. Croix has a total of 321 households, with an average of 2 people in each.

What is the median household income in Marine on St. Croix?

Marine on St. Croix has a median household income of $126,250, representing a +2.0% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Marine on St. Croix?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 89.4% (320 residents)
  • Blue-collar workers: 10.6% (38 residents)

Places of employment:
  • Self-employed: 15.4% (55 residents)
  • Private companies: 56.2% (201 residents)
  • Governmental workers: 17.3% (62 residents)
  • Not-for-profit companies: 11.2% (40 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025