Colby, Kansas Population 2024

5,522

Colby is a city located in Thomas County Kansas. Colby has a 2024 population of 5,522. It is also the county seat of Thomas County. Colby is currently declining at a rate of -0.18% annually and its population has decreased by -0.72% since the most recent census, which recorded a population of 5,562 in 2020.

The average household income in Colby is $77,793 with a poverty rate of 7.59%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Colby is 32.3 years, 32.3 years for males, and 32.4 years for females.

Colby Demographics

According to the most recent ACS, the racial composition of Colby was:

  • White: 92.17%
  • Other race: 3.7%
  • Two or more races: 2.2%
  • Black or African American: 1.24%
  • Asian: 0.39%
  • Native American: 0.3%
  • Native Hawaiian or Pacific Islander: 0%
State
Kansas
Land Area (mi²)
3.7 sq mi
Density (mi²)
1,489.50/sq mi
Growth Since 2020
-0.72% (-40)
The current population of Colby, Kansas is 5,522 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 5,562.

Colby, Kansas Population 2024

Population by Race

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Race
Population
Percentage (of total)
White4,98092.17%
Other race2003.7%
Two or more races1192.2%
Black or African American671.24%
Asian210.39%
Native American160.3%
Native Hawaiian or Pacific Islander00%

White

Other race

Two or more races

Black or African American

Asian

Native American

Native Hawaiian or Pacific Islander

Colby Population by Race

Colby Population Pyramid 2024

Colby Median Age

32.3

Total

32.3

Male

32.4

Female

Colby Adults

There are 4,037 adults, (832 of whom are seniors) in Colby.

Colby Age Dependency

68.6

Age Dependency Ratio

26

Old Age Dependency Ratio

42.6

Child Dependency Ratio

Colby Sex Ratio

Female2,66249.27%
Male2,74150.73%

Colby Population by Age

Colby Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All2,1182.3564.235.8
Married1,0183.2384.715.3
Non Family9011.1940.859.2
Female1023.2742.257.8
Male972.8988.711.3

3.17

Average Family Size

2.35

Average Household Size

64.2%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Colby Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Colby Educational Attainment by Sex (over 25)

Colby Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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The highest rate of high school graduation is among white people with a rate of 95.89%.

The highest rate of bachelors degrees is among white people with a rate of 25.73%.

Colby Educational Attainment by Race

All

Male

Female

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$41,984

Average Earnings

$47,083

Average Male

$32,750

Average Female

Colby Earnings by Educational Attainment

Colby Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Colby Language

91.81% of Colby residents speak only English, while 8.19% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 6.28% of the population.

Colby Language

Colby Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White4,4843477.74%
Hispanic417296.95%
Native1515100%
Multiple9388.6%
Other18363.28%

7.59%

Overall Poverty Rate

6.06%

Male Poverty Rate

9.22%

Female Poverty Rate

Poverty in Colby

The race most likely to be in poverty in Colby is Native, with 100% below the poverty level.

The race least likely to be in poverty in Colby is Other, with 3.28% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.64%. Among those working part-time, it was 23.64%, and for those that did not work, the poverty rate was 5.3%.

Colby Poverty

rate

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Rate
Poverty
Less Than 9th Grade27.67%
Some College4.66%
Bachelors or Greater4.05%
High School1.25%

Colby Poverty Rate by Education

rate

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Rate
Poverty
Female Employed4.63%
Male Employed4.45%
Male Unemployed0%
Female Unemployed0%

Colby Poverty Rate by Employment Status and Sex

Colby Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Colby Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

51.3%

Overall Marriage Rate

44.9%

Male Marriage Rate

57.8%

Female Marriage Rate

Colby Married by Age and Sex

male

female

Colby Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 35-44.

Colby Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Colby Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

276

Number of Veterans

266

Male Veterans

10

Female Veterans

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Colby Veterans by War

count

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Colby Veterans by Age

count

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Colby Veterans by Race

Colby Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

0%

Veteran Poverty Rate

35.71%

Veteran Disability Rate

Colby Veterans by Education

LaborForceParticipation

67.3%

Labor Force Participation

67%

Employment Rate

0.4%

Unemployment Rate

Colby Employment by Age

LaborForceParticipation

Colby Employment by Race

LaborForceParticipation

Colby Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

64.5%

Born in Colby

94%

Native Born

6%

Foreign Born

5.05%

Non Citizen

0.94%

Naturalized

Place of Birth

94% of Colby residents were born in the United States, with 64.5% having been born in Kansas. 5.05% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Colby Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
20295,472-10-0.18%
20285,482-10-0.18%
20275,492-10-0.18%
20265,502-10-0.18%
20255,512-10-0.18%
20245,522-10-0.18%
20235,532-10-0.18%
20225,542-26-0.47%
20215,56860.11%
20205,5622464.63%
20195,316230.43%
20185,293-99-1.84%
20175,392-6-0.11%
20165,398-34-0.63%
20155,432591.1%
20145,373-46-0.85%
20135,419-1-0.02%
20125,420-6-0.11%
20115,426100.18%
20105,41600%
20005,450541%
19905,396-148-2.67%
19805,54488619.02%
19704,65844810.64%
19604,2103519.1%
19503,859-1,613-29.48%
showing: 26 rows

Colby Population by Year