Guilford, CT demographics:
population, income, and more

Total population
21,254
0.1% year-over-year change
Median household income
$137,615/yr
5.8% year-over-year change
Housing units
9,463
0.5% year-over-year change

Guilford population

How many people live in Guilford

Guilford is home to 21,254 residents, according to the most recent Census data. Gender-wise, 50.3% of Guilford locals are male, and 49.7% are female.

Total population
21,254
0.1% year-over-year change
Gender ratio
Male
50.3%
10,686
Female
49.7%
10,568
Value Percent YoY change
Male 10,686 50.3% 0.4%
Female 10,568 49.7% -0.2%
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 Guilford is 51, with the population distributed as follows: about 16.2% are children under 15, then 10.4% are in the 15 to 24 age group. Adults between 25 and 44 make up 15.5% of the population, while another 31.2% fall into the 45 to 64 bracket. Finally, around 26.6% are 65 or older.

Median age
51.2
Age breakdown
Under 15
16.2%
15 to 24
10.4%
25 to 44
15.5%
45 to 64
31.2%
Over 65
26.6%
Value Percent YoY change
Under 15 3,449 16.2% -3.2%
15 to 24 2,212 10.4% -1.3%
25 to 44 3,303 15.5% -1.5%
45 to 64 6,625 31.2% 1.8%
Over 65 5,665 26.6% 1.9%
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 Guilford, 89.3% of the population are US-born citizens, while 6.5% have gained naturalized citizenship. At the same time, 4.3% of residents are non-citizens. As for race, 84.6% of locals are Caucasian, 1.6% are African American and 4.5% have Asian roots. There’s also a share of 7.8% that includes residents with two or more races.

Citizenship
U.S.-born citizens
89.3%
Non-U.S.-born citizens
6.5%
Non-citizens
4.3%
Value Percent YoY change
U.S.-born citizens 18,971 89.3% -0.8%
Non-U.S.-born citizens 1,377 6.5% 8.9%
Non-citizens 905 4.3% 7.3%
Racial breakdown
White
84.6%
Black or African American
1.6%
American Indian and Alaska Native
0%
Asian
4.5%
Native Hawaiian and other Pacific Islander
0%
Two or more races
7.8%
Other
1.5%
Value Percent
White 17,974 84.6%
Black or African American 346 1.6%
Asian 948 4.5%
Two or more races 1,662 7.8%
Other 324 1.5%

Households in Guilford

A peek inside Guilford households

Guilford has 8,530 households, with an average of 2 members in each. Of these, 74.5% are families, while the remaining 25.5% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
8,530
1.0% year-over-year change
Average people per household
2
Non-family households
2,176
Family households
6,354
Value Percent YoY change
Non-family households 2,176 25.5% -0.9%
Family households 6,354 74.5% 1.6%
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 Guilford

The housing landscape of Guilford

Guilford's housing consists of 9,463 units, with 84.3% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 3.4% 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 0.2% of the housing landscape.

Housing units
9,463
0.5% year-over-year change
Housing types
Value Percent
1 unit, detached 7,981 84.3%
1 unit, attached 321 3.4%
2 units 249 2.6%
3 or 4 units 185 2%
5 to 9 units 325 3.4%
10 to 19 units 122 1.3%
20 to 49 units 122 1.3%
50 or more units 141 1.5%
Mobile home 17 0.2%
Homes built since 2020
51
183.3% year-over-year change

The age of buildings in Guilford

In Guilford, the median construction year is 1974. About 12.2% of homes were built before the 1940s, with another 4% going up by 1949. Most development happened in the second half of the 20th century. Then, 5.2% of homes were added from 2000 to 2009, 3.9% between 2010 and 2019, and 0.5% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 1,153 12.2% 0.3%
Built between 1940 and 1949 376 4% -12.8%
Built between 1950 and 1959 1,068 11.3% -5.2%
Built between 1960 and 1969 1,366 14.4% -2.5%
Built between 1970 and 1979 1,764 18.6% 1.9%
Built between 1980 and 1989 1,945 20.6% 1.3%
Built between 1990 and 1999 876 9.3% 9.9%
Built between 2000 and 2009 497 5.2% -0.4%
Built between 2010 and 2019 368 3.9% 7.9%
Built in 2020 or later 51 0.5% 183.3%
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.

Guilford occupancy rates

Out of the 8,530 occupied housing units in Guilford, 83.6% are owner-occupied, while 16.4% are lived in by tenants. Meanwhile, 9.9% of all homes on the local market sit vacant.

Occupied housing units
8,530
1.0% year-over-year change
Occupancy breakdown
Renter occupied
1,397
Owner occupied
7,133
Value Percent YoY
change
Renter occupied 1,397 16.4% 9.7%
Owner occupied 7,133 83.6% -0.6%
Unoccupied housing units
9.9%
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.

Guilford housing costs

Housing costs in Guilford come to a median of $2,081 per month, while tenants specifically pay a median gross rent of $1,717.

Median housing costs per month
$2,081/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 Guilford
$1,717/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 Guilford

Guilford education at a glance

About 20.2% of the population in Guilford went to high school, while 15.3% pursued college studies. Another 7% earned an associate degree and 26.7% hold a bachelor’s. Meanwhile, 30.6% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 38 0.2% -28.3%
High school diploma 3,391 20.2% 0.1%
College diploma 2,572 15.3% -9.8%
Associate degree 1,186 7% -6.8%
Bachelor's degree 4,496 26.7% -0.5%
Graduate degree 5,146 30.6% 13.2%
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 Guilford

How much people earn in Guilford

The average annual household income in Guilford was $180,421 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +2.9% change from the previous year. At the same time, the median income stood at $137,615, reflecting a +5.8% shift over the same period.

Average household income in Guilford
$180,421/year
2.9% year-over-year change
Median household income in Guilford
$137,615/year
5.8% year-over-year change

Guilford income by age

In Guilford, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $170,764. Those with someone between 45 and 64 in charge, often well established professionally, earn $184,188 overall. Overall, 97.1% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
25 - 44 $170,764 3.7%
45 - 64 $184,188 10.1%
Over 65 $81,926 0.1%
Above poverty level
20,352
Below poverty level
601
Value Percent YoY
change
Above poverty level 20,352 97.1% 0.1%
Below poverty level 601 2.9% -7.4%

Employment in Guilford

Workforce and job types in Guilford

90.1% of the working population are employed in professional or administrative positions, while 9.9% are in hands-on or service-based jobs. Also, 12.8% run their own businesses, 55.6% are employed by private companies, and 13.9% work in the public sector.

Workforce demographics

White collar
9,227
Blue collar
1,011
Value Percent YoY change
White collar 9,227 90.1% 4.7%
Blue collar 1,011 9.9% -20.2%
Employer type
Self employees
12.8%
Private companies
55.6%
Governmental workers
13.9%
Not for profit companies
17.7%
Value Percent YoY change
Self employees 1,316 12.8% -7.0%
Private companies 5,691 55.6% 3.9%
Governmental workers 1,422 13.9% -4.6%
Not for profit companies 1,810 17.7% 6.5%

Transportation in Guilford

How people get around in Guilford

Commuting methods vary: 96.2% of residents travel by personal vehicle and 2.3% 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 7,634 96.2% -1.2%
Bus or trolleybus 13 0.2% -35.0%
Railroad 57 0.7% 9.6%
Bicycle 46 0.6% -20.7%
Walk 182 2.3% 7.1%
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 Guilford by zipcode?

Zipcode Population Number of households Median income Average income
06437 22,067 8,856 $137,615 $180,398

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FAQs about Guilford demographics 

What is the total population of Guilford?

Guilford has a total population of 21,254 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 +0.1% compared to a year ago.

What is the gender ratio in Guilford?

The gender ratio in Guilford is as follows:
  • 50.3% males (10,686 residents)
  • 49.7% females (10,568 residents)

What is the median age in Guilford?

The median age in Guilford is 51.2.

What is the age distribution of the population in Guilford?

The age distribution in Guilford is as follows:
  • Under 15: 16.2% (3,449 residents)
  • Ages 15-24: 10.4% (2,212 residents)
  • Ages 25-44: 15.5% (3,303 residents)
  • Ages 45-64: 31.2% (6,625 residents)
  • Over 65: 26.6% (5,665 residents)

What is the racial and ethnic makeup of Guilford?

The racial and ethnic makeup of Guilford is as follows:
  • White: 84.6% (17,974 residents)
  • Black or African American: 1.6% (346 residents)
  • American Indian and Alaska Native: 0% ( residents)
  • Asian: 4.5% (948 residents)
  • Native Hawaiian and Other Pacific Islander: 0% ( residents)
  • Two or More Races: 7.8% (1,662 residents)
  • Other: 1.5% (324 residents)

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

U.S.-born citizens represent 89.3% of the population in Guilford.

How many housing units are there in Guilford?

There are 9,463 housing units in Guilford, reflecting a +0.5% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

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

Guilford has a total of 8,530 households, with an average of 2 people in each.

What is the median household income in Guilford?

Guilford has a median household income of $137,615, representing a +5.8% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Guilford?

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

Job types:
  • White-collar workers: 90.1% (9,227 residents)
  • Blue-collar workers: 9.9% (1,011 residents)

Places of employment:
  • Self-employed: 12.8% (1,316 residents)
  • Private companies: 55.6% (5,691 residents)
  • Governmental workers: 13.9% (1,422 residents)
  • Not-for-profit companies: 17.7% (1,810 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