St. Martins, MO demographics:
population, income, and more

Total population
1,228
2.8% year-over-year change
Median household income
$89,250/yr
14.2% year-over-year change
Housing units
456
-0.4% year-over-year change

St. Martins population

How many people live in St. Martins

St. Martins is home to 1,228 residents, according to the most recent Census data. Gender-wise, 47.7% of St. Martins locals are male, and 52.3% are female.

Total population
1,228
2.8% year-over-year change
Gender ratio
Male
47.7%
586
Female
52.3%
642
Value Percent YoY change
Male 586 47.7% 9.1%
Female 642 52.3% -2.4%
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 St. Martins is 38, with the population distributed as follows: about 19.8% are children under 15, then 12.3% are in the 15 to 24 age group. Adults between 25 and 44 make up 28.5% of the population, while another 18.5% fall into the 45 to 64 bracket. Finally, around 20.9% are 65 or older.

Median age
38.1
Age breakdown
Under 15
19.8%
15 to 24
12.3%
25 to 44
28.5%
45 to 64
18.5%
Over 65
20.9%
Value Percent YoY change
Under 15 243 19.8% 0.4%
15 to 24 151 12.3% -1.3%
25 to 44 350 28.5% 19.1%
45 to 64 227 18.5% -3.4%
Over 65 257 20.9% -5.2%
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 St. Martins, 98.9% of the population are US-born citizens, while 0.5% have gained naturalized citizenship. At the same time, 0.6% of residents are non-citizens. As for race, 92.1% of locals are Caucasian, 0.1% are African American and 0.6% have Asian roots. There’s also a share of 5.9% that includes residents with two or more races.

Citizenship
U.S.-born citizens
98.9%
Non-U.S.-born citizens
0.5%
Non-citizens
0.6%
Value Percent YoY change
U.S.-born citizens 1,214 98.9% 2.1%
Non-U.S.-born citizens 6 0.5% 0.0%
Non-citizens 8 0.6% N/A
Racial breakdown
White
92.1%
Black or African American
0.1%
American Indian and Alaska Native
0.2%
Asian
0.6%
Native Hawaiian and other Pacific Islander
0%
Two or more races
5.9%
Other
1.1%
Value Percent
White 1,131 92.1%
Black or African American 1 0.1%
American Indian and Alaska Native 2 0.2%
Asian 8 0.6%
Two or more races 72 5.9%
Other 14 1.1%

Households in St. Martins

A peek inside St. Martins households

St. Martins has 439 households, with an average of 3 members in each. Of these, 75.4% are families, while the remaining 24.6% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
439
-0.9% year-over-year change
Average people per household
3
Non-family households
108
Family households
331
Value Percent YoY change
Non-family households 108 24.6% -8.5%
Family households 331 75.4% 1.9%
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 St. Martins

The housing landscape of St. Martins

St. Martins's housing consists of 456 units, with 82.2% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 0.9% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 0.9% of the housing landscape.

Housing units
456
-0.4% year-over-year change
Housing types
Value Percent
1 unit, detached 375 82.2%
1 unit, attached 4 0.9%
2 units 19 4.2%
3 or 4 units 51 11.2%
10 to 19 units 3 0.7%
Mobile home 4 0.9%
Homes built since 2020
4
% year-over-year change

The age of buildings in St. Martins

In St. Martins, the median construction year is 1988. About 0.7% of homes were built before the 1940s, with another 1.3% going up by 1949. Most development happened in the second half of the 20th century. Then, 25.9% of homes were added from 2000 to 2009, 10.1% between 2010 and 2019, and 0.9% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 3 0.7% N/A
Built between 1940 and 1949 6 1.3% N/A
Built between 1950 and 1959 31 6.8% -39.2%
Built between 1960 and 1969 49 10.8% -9.3%
Built between 1970 and 1979 92 20.2% 1.1%
Built between 1980 and 1989 59 12.9% -4.8%
Built between 1990 and 1999 48 10.5% 9.1%
Built between 2000 and 2009 118 25.9% 2.6%
Built between 2010 and 2019 46 10.1% 12.2%
Built in 2020 or later 4 0.9% N/A
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.

St. Martins occupancy rates

Out of the 439 occupied housing units in St. Martins, 82% are owner-occupied, while 18% are lived in by tenants. Meanwhile, 3.7% of all homes on the local market sit vacant.

Occupied housing units
439
-0.9% year-over-year change
Occupancy breakdown
Renter occupied
79
Owner occupied
360
Value Percent YoY
change
Renter occupied 79 18% -16.0%
Owner occupied 360 82% 3.1%
Unoccupied housing units
3.7%
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.

St. Martins housing costs

Housing costs in St. Martins come to a median of $1,089 per month, while tenants specifically pay a median gross rent of $796.

Median housing costs per month
$1,089/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 St. Martins
$796/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 St. Martins

St. Martins education at a glance

About 29.4% of the population in St. Martins went to high school, while 19.9% pursued college studies. Another 9.7% earned an associate degree and 24.2% hold a bachelor’s. Meanwhile, 14.8% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 18 2% 20.0%
High school diploma 261 29.4% -10.6%
College diploma 177 19.9% -17.3%
Associate degree 86 9.7% 28.4%
Bachelor's degree 215 24.2% 12.0%
Graduate degree 132 14.8% 39.0%
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 St. Martins

How much people earn in St. Martins

The average annual household income in St. Martins was $105,895 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +18.8% change from the previous year. At the same time, the median income stood at $89,250, reflecting a +14.2% shift over the same period.

Average household income in St. Martins
$105,895/year
18.8% year-over-year change
Median household income in St. Martins
$89,250/year
14.2% year-over-year change

St. Martins income by age

In St. Martins, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $123,594. Those with someone between 45 and 64 in charge, often well established professionally, earn $111,667 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $48,750, while those led by someone over 65, many of whom may be retired, have about $61,250 in earnings. Overall, 95% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $48,750 N/A
25 - 44 $123,594 5.0%
45 - 64 $111,667 8.5%
Over 65 $61,250 30.1%
Above poverty level
1,147
Below poverty level
61
Value Percent YoY
change
Above poverty level 1,147 95% 5.0%
Below poverty level 61 5% -26.5%

Average renter income in St. Martins

To get a better sense of what renters earn on average in St. Martins, their median household income was $29,167 according to 2022 Census data. In addition, the rent-to-income ratio in the area, at 32.7%, shows what portion of their earnings goes toward housing expenses.

Renter median household income
$29,167
Rent-to-income ratio
32.7%
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 St. Martins

Workforce and job types in St. Martins

The job market in St. Martins is powered by 568 working residents, spread across a range of industries and roles. 73.2% of the working population are employed in professional or administrative positions, while 26.8% are in hands-on or service-based jobs. Also, 8.1% run their own businesses, 57.4% are employed by private companies, and 29.6% work in the public sector.

Workforce demographics

Working population
568
13.2% year-over-year change
White collar
416
Blue collar
152
Value Percent YoY change
White collar 416 73.2% 13.7%
Blue collar 152 26.8% 11.8%
Employer type
Self employees
8.1%
Private companies
57.4%
Governmental workers
29.6%
Not for profit companies
4.9%
Value Percent YoY change
Self employees 46 8.1% 24.3%
Private companies 326 57.4% 10.5%
Governmental workers 168 29.6% 15.9%
Not for profit companies 28 4.9% 12.0%
Unemployment rate
2.1%
-7.7% year-over-year change

Available workforce

The unemployment rate in St. Martins stands at 2.1%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in St. Martins

How people get around in St. Martins

Means of transportation
Value Percent YoY change
Car 485 84.4% 4.3%
Motorcycle 9 1.6% N/A
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 St. Martins by zipcode?

Zipcode Population Number of households Median income Average income
65109 41,145 17,306 $74,694 $95,927

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FAQs about St. Martins demographics 

What is the total population of St. Martins?

St. Martins has a total population of 1,228 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 +2.8% compared to a year ago.

What is the gender ratio in St. Martins?

The gender ratio in St. Martins is as follows:
  • 47.7% males (586 residents)
  • 52.3% females (642 residents)

What is the median age in St. Martins?

The median age in St. Martins is 38.1.

What is the age distribution of the population in St. Martins?

The age distribution in St. Martins is as follows:
  • Under 15: 19.8% (243 residents)
  • Ages 15-24: 12.3% (151 residents)
  • Ages 25-44: 28.5% (350 residents)
  • Ages 45-64: 18.5% (227 residents)
  • Over 65: 20.9% (257 residents)

What is the racial and ethnic makeup of St. Martins?

The racial and ethnic makeup of St. Martins is as follows:
  • White: 92.1% (1,131 residents)
  • Black or African American: 0.1% (1 residents)
  • American Indian and Alaska Native: 0.2% (2 residents)
  • Asian: 0.6% (8 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 5.9% (72 residents)
  • Other: 1.1% (14 residents)

What percentage of the population in St. Martins are U.S.-born citizens?

U.S.-born citizens represent 98.9% of the population in St. Martins.

How many housing units are there in St. Martins?

There are 456 housing units in St. Martins, reflecting a -0.4% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in St. Martins and what is the average household size?

St. Martins has a total of 439 households, with an average of 3 people in each.

What is the median household income in St. Martins?

St. Martins has a median household income of $89,250, representing a +14.2% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for St. Martins?

The employment rate is 97.9% in St. Martins, with a workforce of 568 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 73.2% (416 residents)
  • Blue-collar workers: 26.8% (152 residents)

Places of employment:
  • Self-employed: 8.1% (46 residents)
  • Private companies: 57.4% (326 residents)
  • Governmental workers: 29.6% (168 residents)
  • Not-for-profit companies: 4.9% (28 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