ZIP Code 48178
standardSource:
South Lyon · Washtenaw County · Michigan
- Population
- 29,320
- Median income
- $131,558
- Median home value
- $410,500
- Bachelor's or higher
- 54.4%
- Land area
- 131.0 sq mi
224/sq mi
▲ 72% vs US
higher than 93% of US ZIPs
▲ 48% vs US
higher than 80% of US ZIPs
Median age 42.9
Detroit
ZIP code 48178 in South Lyon, Michigan has a population of 29,320. The median household income is $131,558, which is 72% above the national average. Median home value is $410,500, 48% above the US average. 54.4% of residents hold a bachelor's degree or higher.
ZIP code 48178 is classified by USPS as a standard delivery area and covers roughly 131.0 square miles in South Lyon, Washtenaw County, Michigan. The area is home to 29,320 residents, producing a population density of 224 people per square mile, and falls within the Detroit time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 48178 against Michigan and the nation.
On the economic side, the median household income for ZIP 48178 sits at $131,558 (79% above the Michigan average), while per-capita income is $62,142. The poverty rate stands at 3.9% and the unemployment rate at 3.2%. On housing, the median home value is $410,500 (87% above the state average) with median rent at $1,336 per month, and 91.2% of occupied units are owner-occupied, a direct signal of whether 48178 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 54.4% of adults hold a bachelor's degree or higher, the median age is 42.9, and the average commute is 32 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Washtenaw County, so you can benchmark 48178 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →
Top industries in ZIP 48178
Top 5 sectors by establishment count
Which industries have the most business establishments in ZIP 48178.
- Construction
Construction
100 establishments
- Health care and social assistance
Health care and social assistance
82 establishments
- Professional, scientific, and technical services
Professional, scientific, and technical services
81 establishments
- Other services (except public administration)
Other services (except public administration)
68 establishments
- Retail trade
Retail trade
65 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, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, FHFA HPI for ZIP 48178, South Lyon, MI · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; HUD FMR + FHFA HPI updated quarterly/annually.
Quick Facts
29,320
Population
131.0
Area (sq mi)
224
People / sq mi
Detroit
Time Zone
standard
ZIP Type
Who lives in ZIP 48178?
42.9
Median Age
49.9%
Male
50.1%
Female
7.6%
Foreign-Born
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?
$131,558
Median Household Income
+79% vs state
$62,142
Per Capita Income
3.9%
Poverty Rate
3.2%
Unemployment Rate
31.5 min
Mean Commute Time
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
14,397
Total Housing Units
13,953
Occupied Units
444
Vacant Units
2.70
Avg Household Size
Occupancy Type
$410,500
Median Home Value
+87% vs state
$1,336
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
+5.5%
YoY Change (2024)
176
HPI Index (2000 = 100)
+76%
Total Change Since 2000
Home values in ZIP 48178 have increased 5.5% over the past year (2024). Since 2000, this ZIP has seen +76% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +2.6% | 127 |
| 2021 | +9.7% | 139 |
| 2022 | +11.2% | 155 |
| 2023 | +7.3% | 166 |
| 2024 | +5.5% | 176 |
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 632 business establishments in ZIP 48178, employing approximately 4,611 people with a combined annual payroll of $211,378,000.
632
Businesses
4,611
Employees
$211.4M
Annual Payroll
15
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 100 | 15.8% |
| Health care and social assistance | 82 | 13.0% |
| Professional, scientific, and technical services | 81 | 12.8% |
| Other services (except public administration) | 68 | 10.8% |
| Retail trade | 65 | 10.3% |
| Accommodation and food services | 45 | 7.1% |
| Administrative and support and waste management and remediation services | 42 | 6.7% |
| Finance and insurance | 31 | 4.9% |
| Real estate and rental and leasing | 30 | 4.8% |
| Wholesale trade | 23 | 3.6% |
| Manufacturing | 18 | 2.9% |
| Transportation and warehousing | 17 | 2.7% |
| Arts, entertainment, and recreation | 14 | 2.2% |
| Information | 6 | 0.9% |
| Educational services | 6 | 0.9% |
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 48178 vs 48165 →
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 48165 | New Hudson, MI | 6,339 | 4.6 mi |
| 48380 | Milford, MI | 7,404 | 9.4 mi |
| 48167 | Northville, MI | 21,534 | 6.9 mi |
| 48139 | Hamburg, MI | 206 | 7.3 mi |
| 48189 | Whitmore Lake, MI | 13,632 | 6.6 mi |
| 48105 | Ann Arbor, MI | 33,905 | 8.1 mi |
| 48168 | Northville, MI | 21,781 | 6.8 mi |
| 48374 | Novi, MI | 14,049 | 7.3 mi |
| 48116 | Brighton, MI | 26,432 | 7.3 mi |
| 48381 | Milford, MI | 12,605 | 8.8 mi |
More ZIP Codes in Washtenaw County
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Frequently Asked Questions
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How many businesses are in ZIP code 48178? ▼
What are the main industries in ZIP code 48178? ▼
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ZIP Code Research Guides
Official Data Resources for South Lyon, MI
Verify and explore additional data for this area using these official government sources.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023). Business data: Source: Census ZIP Code Business Patterns (ZBP) 2023. Home value trends: Source: FHFA House Price Index (HPI), Five-Digit ZIP Codes.
PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.
Read our methodology , how this data is sourced, computed, and verified.