PlainZIP

Willis, MI · standard

ZIP Code 48191

Washtenaw County, Michigan - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

4,054
96/sq mi
$102,833
Median income
$271,900
Median home value
24.4%
Bachelor's or higher

The verdict

Willis pairs an upper-quartile household income with above-median home values, in a rural, homeowner-dominated area.

Top 17%
household income, US ZIPs
Top 38%
home value, US ZIPs
96
people per sq mi
91%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 48191 against every reporting US ZIP.

ZIP code 48191 covers 42.1 square miles in Willis, Washtenaw County, Michigan (a standard USPS delivery area), with a modest 4,054 residents on file, a density of 96 people per square mile, in the Detroit time zone.

ZIP 48191 lands in the middle-income range, with a median household income of $102,833 (40% above the Michigan average), while per-capita income is $51,915. 9.4% of residents live below the poverty line, and the unemployment rate reads 2.8%. The typical home here is valued at $271,900 (24% above the state average); renters pay a median of $1,387 monthly, and 90.9% of units are owner-occupied.

Educational attainment sits below the national norm: 24.4% of adults hold a bachelor's degree or higher, the median age is 47.2, and the average commute is 29 minutes. A geography-based comparison follows: 5 ZIP codes within about 10 miles of 48191, plus 6 more within Washtenaw County, give a clearer read than the national average alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 48191

Top 5 sectors by establishment count in Willis, MI

Which industries have the most business establishments in ZIP 48191.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 48191, Willis, MI · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

4,054

Population

42.1

Area (sq mi)

96

People / sq mi

Detroit

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 48191?

47.2

Median Age

50.9%

Male

49.1%

Female

2.5%

Foreign-Born

White 76.9%
African American 8.4%
Asian 0.6%
American Indian or Alaska Native 0.1%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 12.4%
Hispanic or Latino 1.0%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$102,833

Median Household Income

+40% vs state

$51,915

Per Capita Income

9.4%

Poverty Rate

2.8%

Unemployment Rate

28.5 min

Mean Commute Time

How ZIP 48191 ranks nationally

Willis, MI household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$102,833 Top 17% higher than 83% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). This entry sits in this band. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 55.8%
Bachelor's Degree or Higher 24.4%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

1,708

Total Housing Units

1,662

Occupied Units

46

Vacant Units

2.65

Avg Household Size

Occupancy Type

Owner 90.9%
Renter 9.1%

$271,900

Median Home Value

+24% vs state

$1,387

Median Rent

1996

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

-1.1%

YoY Change (2024)

171

HPI Index (2000 = 100)

+71%

Total Change Since 2000

Home values in ZIP 48191 have decreased 1.1% over the past year (2024). Since 2000, this ZIP has seen +71% cumulative appreciation.

Year Annual Change HPI Index
2020 +6.3% 134
2021 +6.5% 143
2022 +9.8% 157
2023 +9.8% 172
2024 -1.1% 171

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 46 business establishments in ZIP 48191, employing approximately 244 people with a combined annual payroll of $12,160,000.

46

Businesses

244

Employees

$12.2M

Annual Payroll

5

Industry Sectors

Industry Establishments % of Total
Construction 19 41.3%
Professional, scientific, and technical services 7 15.2%
Retail trade 6 13.0%
Other services (except public administration) 5 10.9%
Accommodation and food services 3 6.5%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 48191 vs 48190 →

ZIP 48191 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 48191 ranks #4 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 48191 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 48191 ranks #2 of 6 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
48190 Whittaker, MI 107 1.7 mi
48159 Maybee, MI 2,582 6.6 mi
48111 Belleville, MI 42,313 5.7 mi
48197 Ypsilanti, MI 61,132 6.3 mi
48160 Milan, MI 13,785 6.5 mi

More ZIP Codes in Washtenaw County

48197 standard
Ypsilanti, MI
Pop: 61,132
48103 standard
Ann Arbor, MI
Pop: 53,057
48104 standard
Ann Arbor, MI
Pop: 38,315
48198 standard
Ypsilanti, MI
Pop: 38,186
48105 standard
Ann Arbor, MI
Pop: 33,905
48178 standard
South Lyon, MI
Pop: 29,320

Related Areas

Washtenaw County Willis, MI Michigan

Frequently Asked Questions

What county is ZIP code 48191 in? ▼
ZIP code 48191 (Willis) is located in Washtenaw County, Michigan. Washtenaw County contains multiple ZIP codes, see the full list at /counties/washtenaw-mi.
What is the population of ZIP code 48191? ▼
ZIP code 48191 in Willis, MI has a population of 4,054 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 48191? ▼
The median household income in ZIP 48191 is $102,833, which is 35% above the national average of $76,288.
What is the average home value in ZIP 48191? ▼
The median home value in ZIP 48191 is $271,900, which is 2% below the national average of $278,155.
What is the demographic makeup of ZIP 48191? ▼
The largest racial group in ZIP 48191 is White at 76.9%. Hispanic or Latino residents make up 1.0% of the population.
How many businesses are in ZIP code 48191? ▼
ZIP code 48191 has 46 business establishments employing approximately 244 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 48191? ▼
The top industries by establishment count in ZIP 48191 are: Construction (19), Professional, scientific, and technical services (7), Retail trade (6). There are 5 industry sectors represented in total.
How have home values changed in ZIP code 48191? ▼
According to the FHFA House Price Index, home values in ZIP 48191 decreased by 1.1% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 71%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 48191? ▼
In ZIP code 48191, 55.8% of residents aged 25+ have a high school diploma or higher, and 24.4% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 48191? ▼
The mean commute time for workers in ZIP code 48191 is 28.5 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 48191? ▼
In ZIP code 48191, approximately 90.9% of occupied housing units are owner-occupied and 9.1% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 48191? ▼
The poverty rate in ZIP code 48191 is 9.4% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.