Saint John, IN demographics:
population, income, and more

Total population
18,839
1.8% year-over-year change
Median household income
$127,146/yr
3.2% year-over-year change
Housing units
6,750
2.0% year-over-year change

Saint John population

How many people live in Saint John

Saint John is home to 18,839 residents, according to the most recent Census data. Gender-wise, 51% of Saint John locals are male, and 49% are female.

Total population
18,839
1.8% year-over-year change
Gender ratio
Male
51%
9,610
Female
49%
9,229
Value Percent YoY change
Male 9,610 51% 1.1%
Female 9,229 49% 2.6%
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 Saint John is 44, with the population distributed as follows: about 18.1% are children under 15, then 12.9% are in the 15 to 24 age group. Adults between 25 and 44 make up 19.5% of the population, while another 29% fall into the 45 to 64 bracket. Finally, around 20.5% are 65 or older.

Median age
44.4
Age breakdown
Under 15
18.1%
15 to 24
12.9%
25 to 44
19.5%
45 to 64
29%
Over 65
20.5%
Value Percent YoY change
Under 15 3,409 18.1% 0.7%
15 to 24 2,436 12.9% -4.5%
25 to 44 3,680 19.5% 4.0%
45 to 64 5,459 29% 0.2%
Over 65 3,854 20.5% 7.7%
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 Saint John, 94% of the population are US-born citizens, while 5.2% have gained naturalized citizenship. At the same time, 0.9% of residents are non-citizens. As for race, 82.9% of locals are Caucasian, 2.1% are African American and 1.5% have Asian roots. There’s also a share of 7.7% that includes residents with two or more races.

Citizenship
U.S.-born citizens
94%
Non-U.S.-born citizens
5.2%
Non-citizens
0.9%
Value Percent YoY change
U.S.-born citizens 17,699 94% 1.6%
Non-U.S.-born citizens 973 5.2% 2.9%
Non-citizens 167 0.9% 20.1%
Racial breakdown
White
82.9%
Black or African American
2.1%
American Indian and Alaska Native
0.2%
Asian
1.5%
Native Hawaiian and other Pacific Islander
0%
Two or more races
7.7%
Other
5.7%
Value Percent
White 15,616 82.9%
Black or African American 398 2.1%
American Indian and Alaska Native 32 0.2%
Asian 278 1.5%
Two or more races 1,450 7.7%
Other 1,066 5.7%

Households in Saint John

A peek inside Saint John households

Saint John has 6,657 households, with an average of 3 members in each. Of these, 81.7% are families, while the remaining 18.3% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
6,657
1.4% year-over-year change
Average people per household
3
Non-family households
1,219
Family households
5,438
Value Percent YoY change
Non-family households 1,219 18.3% -4.6%
Family households 5,438 81.7% 2.9%
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 Saint John

The housing landscape of Saint John

Saint John's housing consists of 6,750 units, with 85.8% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 10.9% 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 0.6% of the housing landscape.

Housing units
6,750
2.0% year-over-year change
Housing types
Value Percent
1 unit, detached 5,793 85.8%
1 unit, attached 734 10.9%
2 units 22 0.3%
3 or 4 units 83 1.2%
5 to 9 units 13 0.2%
10 to 19 units 7 0.1%
20 to 49 units 22 0.3%
50 or more units 32 0.5%
Mobile home 44 0.6%
Homes built since 2020
297
110.6% year-over-year change

The age of buildings in Saint John

In Saint John, the median construction year is 2001. About 3% of homes were built before the 1940s, with another 0.3% going up by 1949. Most development happened in the second half of the 20th century. Then, 24.3% of homes were added from 2000 to 2009, 22.8% between 2010 and 2019, and 4.4% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 201 3% -12.2%
Built between 1940 and 1949 23 0.3% -80.3%
Built between 1950 and 1959 184 2.7% 49.6%
Built between 1960 and 1969 398 5.9% 0.2%
Built between 1970 and 1979 830 12.3% 1.8%
Built between 1980 and 1989 399 5.9% -4.1%
Built between 1990 and 1999 1,239 18.4% 1.6%
Built between 2000 and 2009 1,639 24.3% 0.7%
Built between 2010 and 2019 1,541 22.8% 0.7%
Built in 2020 or later 297 4.4% 110.6%
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.

Saint John occupancy rates

Out of the 6,657 occupied housing units in Saint John, 97.2% are owner-occupied, while 2.8% are lived in by tenants. Meanwhile, 1.4% of all homes on the local market sit vacant.

Occupied housing units
6,657
1.4% year-over-year change
Occupancy breakdown
Renter occupied
190
Owner occupied
6,467
Value Percent YoY
change
Renter occupied 190 2.8% 46.1%
Owner occupied 6,467 97.2% 0.5%
Unoccupied housing units
1.4%
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.

Saint John housing costs

Housing costs in Saint John come to a median of $1,780 per month, while tenants specifically pay a median gross rent of $981.

Median housing costs per month
$1,780/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 Saint John
$981/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 Saint John

Saint John education at a glance

About 29.8% of the population in Saint John went to high school, while 18.6% pursued college studies. Another 8% earned an associate degree and 26.3% hold a bachelor’s. Meanwhile, 13.9% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 502 3.5% 34.2%
High school diploma 4,309 29.8% 8.8%
College diploma 2,688 18.6% -9.4%
Associate degree 1,153 8% -2.0%
Bachelor's degree 3,806 26.3% 1.1%
Graduate degree 2,015 13.9% 10.8%
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 Saint John

How much people earn in Saint John

The average annual household income in Saint John was $160,104 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +2.7% change from the previous year. At the same time, the median income stood at $127,146, reflecting a +3.2% shift over the same period.

Average household income in Saint John
$160,104/year
2.7% year-over-year change
Median household income in Saint John
$127,146/year
3.2% year-over-year change

Saint John income by age

In Saint John, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $156,194. Those with someone between 45 and 64 in charge, often well established professionally, earn $190,296 overall. Overall, 97.3% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
25 - 44 $156,194 1.7%
45 - 64 $190,296 7.7%
Over 65 $63,049 1.7%
Above poverty level
18,191
Below poverty level
508
Value Percent YoY
change
Above poverty level 18,191 97.3% 1.6%
Below poverty level 508 2.7% 19.8%

Employment in Saint John

Workforce and job types in Saint John

81.2% of the working population are employed in professional or administrative positions, while 18.8% are in hands-on or service-based jobs. Also, 10% run their own businesses, 65.8% are employed by private companies, and 14% work in the public sector.

Workforce demographics

White collar
7,202
Blue collar
1,666
Value Percent YoY change
White collar 7,202 81.2% 0.5%
Blue collar 1,666 18.8% -4.4%
Employer type
Self employees
10%
Private companies
65.8%
Governmental workers
14%
Not for profit companies
10.2%
Value Percent YoY change
Self employees 891 10% -9.8%
Private companies 5,837 65.8% 0.2%
Governmental workers 1,241 14% 13.8%
Not for profit companies 900 10.2% -10.2%

Transportation in Saint John

How people get around in Saint John

Commuting methods vary: 97.2% of residents travel by personal vehicle and 1.1% 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 7,259 97.2% -0.6%
Bus or trolleybus 1 0% 0.0%
Railroad 111 1.5% 6.7%
Bicycle 19 0.2% 72.7%
Walk 82 1.1% -18.8%
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 Saint John by zipcode?

Zipcode Population Number of households Median income Average income
46373 18,843 6,658 $127,146 $160,321

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FAQs about Saint John demographics 

What is the total population of Saint John?

Saint John has a total population of 18,839 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 +1.8% compared to a year ago.

What is the gender ratio in Saint John?

The gender ratio in Saint John is as follows:
  • 51% males (9,610 residents)
  • 49% females (9,229 residents)

What is the median age in Saint John?

The median age in Saint John is 44.4.

What is the age distribution of the population in Saint John?

The age distribution in Saint John is as follows:
  • Under 15: 18.1% (3,409 residents)
  • Ages 15-24: 12.9% (2,436 residents)
  • Ages 25-44: 19.5% (3,680 residents)
  • Ages 45-64: 29% (5,459 residents)
  • Over 65: 20.5% (3,854 residents)

What is the racial and ethnic makeup of Saint John?

The racial and ethnic makeup of Saint John is as follows:
  • White: 82.9% (15,616 residents)
  • Black or African American: 2.1% (398 residents)
  • American Indian and Alaska Native: 0.2% (32 residents)
  • Asian: 1.5% (278 residents)
  • Native Hawaiian and Other Pacific Islander: 0% ( residents)
  • Two or More Races: 7.7% (1,450 residents)
  • Other: 5.7% (1,066 residents)

What percentage of the population in Saint John are U.S.-born citizens?

U.S.-born citizens represent 94% of the population in Saint John.

How many housing units are there in Saint John?

There are 6,750 housing units in Saint John, reflecting a +2.0% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Saint John and what is the average household size?

Saint John has a total of 6,657 households, with an average of 3 people in each.

What is the median household income in Saint John?

Saint John has a median household income of $127,146, representing a +3.2% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Saint John?

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

Job types:
  • White-collar workers: 81.2% (7,202 residents)
  • Blue-collar workers: 18.8% (1,666 residents)

Places of employment:
  • Self-employed: 10% (891 residents)
  • Private companies: 65.8% (5,837 residents)
  • Governmental workers: 14% (1,241 residents)
  • Not-for-profit companies: 10.2% (900 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