Bertram, IA demographics:
population, income, and more

Total population
239
7.7% year-over-year change
Median household income
$86,786/yr
-13.2% year-over-year change
Housing units
111
14.4% year-over-year change

Bertram population

How many people live in Bertram

Bertram is home to 239 residents, according to the most recent Census data. Gender-wise, 49.4% of Bertram locals are male, and 50.6% are female.

Total population
239
7.7% year-over-year change
Gender ratio
Male
49.4%
118
Female
50.6%
121
Value Percent YoY change
Male 118 49.4% 5.4%
Female 121 50.6% 10.0%
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 Bertram is 54, with the population distributed as follows: about 8.4% are children under 15, then 12.1% are in the 15 to 24 age group. Adults between 25 and 44 make up 17.2% of the population, while another 25.1% fall into the 45 to 64 bracket. Finally, around 37.2% are 65 or older.

Median age
54.3
Age breakdown
Under 15
8.4%
15 to 24
12.1%
25 to 44
17.2%
45 to 64
25.1%
Over 65
37.2%
Value Percent YoY change
Under 15 20 8.4% -4.8%
15 to 24 29 12.1% 3.6%
25 to 44 41 17.2% 20.6%
45 to 64 60 25.1% -3.2%
Over 65 89 37.2% 15.6%
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 Bertram, 99.6% of the population are US-born citizens, while 0.4% have gained naturalized citizenship. There’s also a share of 7.1% that includes residents with two or more races.

Citizenship
U.S.-born citizens
99.6%
Non-U.S.-born citizens
0.4%
Non-citizens
0%
Value Percent YoY change
U.S.-born citizens 238 99.6% 7.7%
Non-U.S.-born citizens 1 0.4% 0.0%
Racial breakdown
White
92.5%
Black or African American
0%
American Indian and Alaska Native
0%
Asian
0%
Native Hawaiian and other Pacific Islander
0%
Two or more races
7.1%
Other
0.4%
Value Percent
White 221 92.5%
Two or more races 17 7.1%
Other 1 0.4%

Households in Bertram

A peek inside Bertram households

Bertram has 106 households, with an average of 2 members in each. Of these, 77.4% are families, while the remaining 22.6% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
106
12.8% year-over-year change
Average people per household
2
Non-family households
24
Family households
82
Value Percent YoY change
Non-family households 24 22.6% 50.0%
Family households 82 77.4% 5.1%
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 Bertram

The housing landscape of Bertram

Bertram's housing consists of 111 units, with 98.2% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 1.8% and offer a more compact, shared living style.

Housing units
111
14.4% year-over-year change
Housing types
Value Percent
1 unit, detached 109 98.2%
1 unit, attached 2 1.8%
Homes built since 2020
0
% year-over-year change

The age of buildings in Bertram

In Bertram, the median construction year is 1985. About 9.9% of homes were built before the 1940s, with another 0.9% 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 11 9.9% 37.5%
Built between 1940 and 1949 1 0.9% N/A
Built between 1950 and 1959 3 2.7% -25.0%
Built between 1960 and 1969 14 12.6% -26.3%
Built between 1970 and 1979 17 15.3% 6.2%
Built between 1980 and 1989 21 18.9% 110.0%
Built between 1990 and 1999 21 18.9% 23.5%
Built between 2000 and 2009 14 12.6% -6.7%
Built between 2010 and 2019 9 8.1% 12.5%
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.

Bertram occupancy rates

Out of the 106 occupied housing units in Bertram, 86.8% are owner-occupied, while 13.2% are lived in by tenants. Meanwhile, 4.5% of all homes on the local market sit vacant.

Occupied housing units
106
12.8% year-over-year change
Occupancy breakdown
Renter occupied
14
Owner occupied
92
Value Percent YoY
change
Renter occupied 14 13.2% 250.0%
Owner occupied 92 86.8% 2.2%
Unoccupied housing units
4.5%
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.

Bertram housing costs

Median housing costs per month
$1,188/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.

Education in Bertram

Bertram education at a glance

About 24.9% of the population in Bertram went to high school, while 30.1% pursued college studies. Another 13.4% earned an associate degree and 17.7% hold a bachelor’s. Meanwhile, 13.9% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
High school diploma 52 24.9% -3.7%
College diploma 63 30.1% 34.0%
Associate degree 28 13.4% 7.7%
Bachelor's degree 37 17.7% -9.8%
Graduate degree 29 13.9% 26.1%
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 Bertram

How much people earn in Bertram

The average annual household income in Bertram was $113,835 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a -11.2% change from the previous year. At the same time, the median income stood at $86,786, reflecting a -13.2% shift over the same period.

Average household income in Bertram
$113,835/year
-11.2% year-over-year change
Median household income in Bertram
$86,786/year
-13.2% year-over-year change

Bertram income by age

In Bertram, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $86,964. Those with someone between 45 and 64 in charge, often well established professionally, earn $128,750 overall. Overall, 97.5% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
25 - 44 $86,964 -36.8%
45 - 64 $128,750 1.5%
Over 65 $63,750 -20.3%
Above poverty level
231
Below poverty level
6
Value Percent YoY
change
Above poverty level 231 97.5% 7.9%
Below poverty level 6 2.5% 0.0%

Employment in Bertram

Workforce and job types in Bertram

The job market in Bertram is powered by 127 working residents, spread across a range of industries and roles. 80.3% of the working population are employed in professional or administrative positions, while 19.7% are in hands-on or service-based jobs. Also, 13.4% run their own businesses, 58.3% are employed by private companies, and 14.2% work in the public sector.

Workforce demographics

Working population
127
8.6% year-over-year change
White collar
102
Blue collar
25
Value Percent YoY change
White collar 102 80.3% 22.9%
Blue collar 25 19.7% -26.5%
Employer type
Self employees
13.4%
Private companies
58.3%
Governmental workers
14.2%
Not for profit companies
14.2%
Value Percent YoY change
Self employees 17 13.4% 0.0%
Private companies 74 58.3% 4.2%
Governmental workers 18 14.2% 12.5%
Not for profit companies 18 14.2% 38.5%

Transportation in Bertram

How people get around in Bertram

Means of transportation
Value Percent YoY change
Car 106 84.1% 11.6%
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 Bertram by zipcode?

Zipcode Population Number of households Median income Average income
52403 22,551 9,875 $74,703 $115,663

Explore more communities

FAQs about Bertram demographics 

What is the total population of Bertram?

Bertram has a total population of 239 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 +7.7% compared to a year ago.

What is the gender ratio in Bertram?

The gender ratio in Bertram is as follows:
  • 49.4% males (118 residents)
  • 50.6% females (121 residents)

What is the median age in Bertram?

The median age in Bertram is 54.3.

What is the age distribution of the population in Bertram?

The age distribution in Bertram is as follows:
  • Under 15: 8.4% (20 residents)
  • Ages 15-24: 12.1% (29 residents)
  • Ages 25-44: 17.2% (41 residents)
  • Ages 45-64: 25.1% (60 residents)
  • Over 65: 37.2% (89 residents)

What is the racial and ethnic makeup of Bertram?

The racial and ethnic makeup of Bertram is as follows:
  • White: 92.5% (221 residents)
  • Black or African American: 0% (0 residents)
  • American Indian and Alaska Native: 0% (0 residents)
  • Asian: 0% (0 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 7.1% (17 residents)
  • Other: 0.4% (1 residents)

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

U.S.-born citizens represent 99.6% of the population in Bertram.

How many housing units are there in Bertram?

There are 111 housing units in Bertram, reflecting a +14.4% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

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

Bertram has a total of 106 households, with an average of 2 people in each.

What is the median household income in Bertram?

Bertram has a median household income of $86,786, representing a -13.2% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Bertram?

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

Job types:
  • White-collar workers: 80.3% (102 residents)
  • Blue-collar workers: 19.7% (25 residents)

Places of employment:
  • Self-employed: 13.4% (17 residents)
  • Private companies: 58.3% (74 residents)
  • Governmental workers: 14.2% (18 residents)
  • Not-for-profit companies: 14.2% (18 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