HomeWisconsinMarathon CountyColby city
Colby city, Wisconsin: commercial real estate data.
Colby city is a Census city of 1,907 people across 1.64 square miles of land, lying across Marathon County and Clark County. Median household income is $50,114, 53.4 percent of occupied homes are owned, and the SBA record carries 3 7(a) approvals to borrowers here worth $482,500.
67 sourced place values · tier FULL · 7 sections · underlined figures are computed by MMCG Analytics, not published by the agency
Colby
What Colby is
- Census place typecity
- Land area1.64 sq mi
- Water area0.01 sq mi
- Population per square mile of land1,165
- County holding the largest share of its areaMarathon County, 53.1 percent
- Counties this place lies inMarathon County 53.1 percent, Clark County 46.9 percent
Colby city crosses a county line. The split above is measured from the Census boundary of the place against the county boundaries, by area, so it says where the ground is and not where the town hall is.
US Census Bureau, cartographic boundary file, places, 2024 vintage. US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Colby
How many people live in Colby
- Population1,907
- Median age38.3
- Population under 18569 plus or minus 134
- Share under 1829.8 percent
- Population 65 and over425 plus or minus 99
- Share 65 and over22.3 percent
- Households689
- Family households442
- Share of households that are families64.2 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Colby
Income and work in Colby
- Median household income$50,114 plus or minus $13,210
- Per capita income$24,388
- Civilian labor force774
- Employed763
- Unemployed11 plus or minus 10
- Unemployment rate1.4 percent plus or minus 1.3
- Adults 25 and over1,216
- Adults 25 and over with a high school diploma or higher86.5 percent
- Adults 25 and over with a bachelor degree or higher16.1 percent plus or minus 5.2
- Adults 25 and over with a graduate degree3.8 percent plus or minus 2.5
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Colby
Housing in Colby
- Housing units713
- Occupied units689
- Vacant units24 plus or minus 27
- Vacancy rate3.4 percent plus or minus 3.8
- Owner occupied368
- Renter occupied321 plus or minus 70
- Ownership rate53.4 percent
- Median owner-occupied home value$184,700
- Median gross rent, monthly$854
- Annual rent as a share of median income20.4 percent plus or minus 5.6
- Single family units436
- Share single family61.2 percent
- Units in buildings of two or more243 plus or minus 69
- Share in buildings of two or more34.1 percent plus or minus 9.0
- Mobile homes34 plus or minus 29
- Median year structure built1974
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Colby
How Colby gets to work
- Workers 16 and over who commute701
- Commuting under 15 minutes358 plus or minus 87
- Share commuting under 15 minutes51.1 percent
- Commuting 30 minutes or more178 plus or minus 62
- Share commuting 30 minutes or more25.4 percent plus or minus 7.8
- Drove alone79.5 percent
- Carpooled6.5 percent plus or minus 3.7
- Public transport0.0 percent
- Walked3.7 percent plus or minus 2.2
- Worked from home7.2 percent plus or minus 5.7
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Colby
SBA loans in Colby (7(a))
- Approvals3
- Gross approval$482,500
- Average approval$160,833
- Median approval$102,500
- Ninetieth percentile approval$350,000
- Largest approval$350,000
- Jobs supported8
- Jobs per approval2.7
- Loans with a final outcome0
- Paid in full0
- Charged off0
- Median term120 months
- Share on real estate terms of 20 years or more0.0 percent
- Share to franchises0.0 percent
- Distinct lenders3
- Distinct industries by NAICS3
A charge-off rate is not published here. only 0 resolved loans, too few to publish a rate, and a rate over that few outcomes would move several points on one loan.
US Small Business Administration, 7(a) FOIA release, FY2020 to FY2026 year to date, as of 2026-06-30.
Marathon County, not Colby
Marathon County context, not Colby figures
These are Marathon County figures. There is no place level equivalent published for any of them, so they are shown as the county backdrop and never as Colby measurements.
- Establishments in Marathon County3,436
- Employment at those establishments, Marathon County65,770
- Covered employment, Marathon County70,626
- Average annual pay, Marathon County$57,976
- Average weekly wage, Marathon County$1,115
- Housing units permitted, Marathon County408
- Of those, single family, Marathon County216
- County product, 2024, Marathon County$11,882,101,000
- County product change over the prior year, Marathon County5.3 percent
- Average income of an arriving household, Marathon County$65,979
Every figure in this section is published for Marathon County as a whole and is not a measurement of Colby. It is here because a county backdrop is what a credit committee reads a place against, and it is labelled so that it can never be quoted as the place's own.
US Census Bureau, County Business Patterns, 2023. US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages. US Census Bureau, Building Permits Survey, 2024 annual. US Bureau of Economic Analysis, Regional, table CAGDP2, CAGDP2, through 2024. US Internal Revenue Service, Statistics of Income county migration flows, 2021 to 2022 filing years.
Coverage
What this page does not hold.
Every item below could be filled with a plausible figure. None of them is. On a page a lender may read, a number that cannot be traced is worse than an absence, so the absences are named.
- This place is not listed as a community in the FEMA Community Status Book, so no NFIP participation or CRS class is shown.
- Parcel level detail, zoning and flood zone at an address are resolved in the platform, not on this page.
SBA figures count approvals to borrowers whose address is in the place. They are not approvals for projects inside the place boundary: the tape records a borrower city and a project county, and those can differ.
Common questions
Colby questions, answered from the record.
How many people live in Colby, Wisconsin?
1,907, in 689 households. Colby city covers 1.64 square miles of land, which is 1,165 people per square mile. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
What county is Colby in?
Colby lies in more than one. By area it is 53.1 percent in Marathon County, 46.9 percent in Clark County. This page sits under Marathon County because that county holds the largest share. The split is measured from the Census boundary of the place against the county boundaries.
What is the median household income in Colby?
$50,114. The median owner-occupied home is valued at $184,700. Median gross rent is $854 per month. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
How much SBA lending goes to Colby businesses?
3 7(a) approvals totalling $482,500, across 3 lenders, median approval $102,500. These count approvals to borrowers whose address is in Colby, not projects sited inside the place boundary, and they are approvals recorded in the release rather than loans disbursed.
Do SBA loans to Colby borrowers get paid back?
No rate is published for Colby. only 0 resolved loans, too few to publish a rate, and a percentage over that few outcomes would move several points on a single loan. The counts are shown instead.
Are the county figures on this page Colby figures?
No, and they are labelled so. County Business Patterns, QCEW, the Building Permits Survey, BEA product and IRS migration are published for Marathon County as a whole and there is no place level equivalent. They appear in one clearly marked section as context and are never presented as measurements of Colby.
Is zoning published for Colby?
Not yet. The zoning layer is in build. Nothing on this page presents parcel level zoning.