231 Area Code

103 cities use the 231 area code in Michigan.

The 231 area code spans 23 counties in Michigan.

Median age: 40.67

Median age in Area Code 231 is 40.67 years. 11.78% of residents are aged 0-9. 12.40% of residents are aged 10-19. The percentage of residents in their twenties is 13.32. 12.46 % are in their thirties, 11.03% in their fourties, 13.25 % in their fifties, and 13.53 % in their sixties. 7.94 % of residents are in their seventies and 4.30 % are eighty and over.

50.12% are female
49.88% are male

49.88% of residents in Area Code 231 are male and 50.12% are female. 50.66% of residents are married and 13.19% are divorced. 30.50% have never been married. 5.62% are widowed. The average size of resident families is 3.02.

Median household income: 61,568.70
52.05% have two income earners
25.01% of households earn $100,000+

Median household income in Area Code 231 is $61,568.70 with 52.05% of families having two income earners. 25.01% of households earn at least $100,000. 2.63% of households have an income under $5,000, 2.27% from $5,000-$10,000, 3.82% from $10,000-$15,000, 4.29% from $15,000-$20,000, 4.72% from $20,000-$25,000, 9.48% from $25,000-$35,000, 13.71% from $35,000-$50,000, 19.85% from $50,000-$75,000, 14.23% from $75,000-$100,000, 14.87% from $100,000-$150,000 and 10.13% over $150,000. The median income of individuals is $31,380.00.

Median home value: $176,557.28
Median rent: $893.06
Rent burden: 29.86%

74.54% of households in Area Code 231 own (rather than rent) their residence. The median value of those homes is $176,557.28. The median rent paid by renters is $893.06 or 29.86% of the median renter's household income.

40.22% have a Science and Engineering degree

8.22% of residents in Area Code 231 have less than a high school education. 30.01% have a high school diploma but no more. 32.59% of residents have some college but no more. 18.83% have a bachelor's degree (or equivalent) but no more. 10.35% have a graduate degree. 40.22% have a Bachelor's degree or higher in a Science and Engineering (or related) field.

21.69 minutes of commute time

61.94% of residents in Area Code 231 16 and older are in the labor force. 5.40% of residents are unemployed. The median commute time of resident workers in Area Code 231 is 21.69 minutes.

7.33% report being Hispanic

83.04% of residents in Area Code 231 report their race as White. 7.01% report their race as Black or African American. 1.86% report their race as Asian. 0.79% report their race as American Indian and Alaska Native. 0.02% report their race as Native Hawaiian and Other Pacific Islander. 2.00% report their race as Some other race. 5.26% report their race as Two or more races. 7.33% report being Hispanic. Note: Hispanic is considered to be an ethnicity and not a race.

13.81% report a disability
1.26% speak limited English
5.77% have no health insurance
7.58% are veterans

13.81% of residents in Area Code 231 report a disability. 1.26% of residents only speak limited English. 5.77% of residents report not having health insurance. 7.58% of residents are veterans.

There are 165 ZIP codes within the 231 area code, covering cities across 23 counties in Michigan.

• 248 (Detroit, MI)
• 269 (Grand Rapids, MI)
• 313 (Detroit, MI)
• 517 (Detroit, MI)
• 586 (Detroit, MI)
• 616 (Grand Rapids, MI)
• 734 (Detroit, MI)
• 810 (Detroit, MI)
• 906 (Marquette, MI)
• 947 (Detroit, MI)
• 989 (Saginaw, MI)