Guilford Flag

Guilford

County Seat:
No
Area (mi²):
37.11
State:
Illinois

Guilford is located in Jo Daviess County, Illinois. Guilford has a 2025 population of 1,496 . Guilford is currently declining at a rate of -0.86% annually and its population has decreased by -2.73% since the most recent census, which recorded a population of 1,538 in 2020.

The average household income in Guilford is $135,977 with a poverty rate of 2.2%. The median age in Guilford is 61.7 years: 64.1 years for males, and 61.1 years for females. For every 100 females there are 95.1 males.

1.5K
Total Population
40
Density (mi²)
-13 -0.86%
Growth

Guilford Population

Guilford Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Guilford includes 90.69% White, and smaller percentages for other race, Native American and multiracial populations.

Population by Race

White (90.69%)

Two or more races (8.73%)

Other race (0.52%)

Native American (0.06%)

Race
Population
Percentage (of total)
White1,56890.69%
Two or more races1518.73%
Other race90.52%
Native American10.06%

Guilford Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Guilford's average per capita income is $65,391. Household income levels show a median of $108,681. The poverty rate stands at 2.2%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Families$112,669$143,734
Married Families$112,443-
Households$108,681$135,977
Non Families$41,364$107,296

$65,391

Average Income

$108,681

Median Household Income

2.2%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)