PlainZIP

Brooklyn, WI · standard

ZIP Code 53521

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

3,656
23/sq mi
$108,036
Median income
$391,100
Median home value
35.4%
Bachelor's or higher

The verdict

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

Top 14%
household income, US ZIPs
Top 22%
home value, US ZIPs
23
people per sq mi
88%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 53521 against every reporting US ZIP.

ZIP code 53521 covers 159.0 square miles in Brooklyn, Rock County, Wisconsin (a standard USPS delivery area), with a modest 3,656 residents on file, a density of 23 people per square mile, in the Chicago time zone.

ZIP 53521 lands in the middle-income range, with a median household income of $108,036 (38% above the Wisconsin average), while per-capita income is $47,112. Local economic indicators show a 3.6% poverty rate alongside 2.3% unemployment. On housing, the median home value is $391,100 (57% above the state average) with median rent at $1,201 per month, and 88.3% of occupied units are owner-occupied.

A solid share of residents have a four-year degree: 35.4% of adults hold a bachelor's degree or higher, the median age is 42.3, and the average commute is 26 minutes. To put 53521 in local context, 3 ZIP codes within roughly 10 miles appear further down this page alongside 6 additional ZIPs in Rock County, for a geography-aware comparison.

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 53521

Top 5 sectors by establishment count in Brooklyn, WI

Which industries have the most business establishments in ZIP 53521.

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 53521, Brooklyn, WI · 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

3,656

Population

159.0

Area (sq mi)

23

People / sq mi

Chicago

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 53521?

42.3

Median Age

53.8%

Male

46.2%

Female

1.8%

Foreign-Born

White 90.8%
African American 1.3%
Asian 0.5%
American Indian or Alaska Native 0.1%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 6.6%
Hispanic or Latino 2.8%

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?

$108,036

Median Household Income

+38% vs state

$47,112

Per Capita Income

3.6%

Poverty Rate

2.3%

Unemployment Rate

25.5 min

Mean Commute Time

How ZIP 53521 ranks nationally

Brooklyn, WI household income vs. every US ZIP code

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

$108,036 Top 14% higher than 86% 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 64.8%
Bachelor's Degree or Higher 35.4%

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

What does housing look like?

1,418

Total Housing Units

1,393

Occupied Units

25

Vacant Units

2.61

Avg Household Size

Occupancy Type

Owner 88.3%
Renter 11.7%

$391,100

Median Home Value

+57% vs state

$1,201

Median Rent

1984

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

-0.3%

YoY Change (2024)

241

HPI Index (2000 = 100)

+141%

Total Change Since 2000

Home values in ZIP 53521 have decreased 0.3% over the past year (2024). Since 2000, this ZIP has seen +141% cumulative appreciation.

Year Annual Change HPI Index
2020 +3.1% 171
2021 +9.9% 188
2022 +13.8% 214
2023 +12.8% 242
2024 -0.3% 241

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 67 business establishments in ZIP 53521, employing approximately 266 people with a combined annual payroll of $12,190,000.

67

Businesses

266

Employees

$12.2M

Annual Payroll

10

Industry Sectors

Industry Establishments % of Total
Construction 17 25.4%
Professional, scientific, and technical services 9 13.4%
Administrative and support and waste management and remediation services 8 11.9%
Other services (except public administration) 5 7.5%
Manufacturing 4 6.0%
Wholesale trade 4 6.0%
Transportation and warehousing 4 6.0%
Accommodation and food services 4 6.0%
Retail trade 3 4.5%
Health care and social assistance 3 4.5%

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 53521 vs 53575 →

ZIP 53521 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 53521 ranks #3 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 53521 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 53521 ranks the highest of 4 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
53575 Oregon, WI 15,494 6.4 mi
53502 Albany, WI 2,421 7.7 mi
53536 Evansville, WI 8,503 8.9 mi

More ZIP Codes in Rock County

53511 standard
Beloit, WI
Pop: 48,929
53546 standard
Janesville, WI
Pop: 30,648
53545 standard
Janesville, WI
Pop: 23,117
53548 standard
Janesville, WI
Pop: 18,558
53534 standard
Edgerton, WI
Pop: 11,512
53563 standard
Milton, WI
Pop: 10,728

Related Areas

Rock County Brooklyn, WI Wisconsin

Frequently Asked Questions

What county is ZIP code 53521 in? ▼
ZIP code 53521 (Brooklyn) is located in Rock County, Wisconsin. Rock County contains multiple ZIP codes, see the full list at /counties/rock-wi.
What is the population of ZIP code 53521? ▼
ZIP code 53521 in Brooklyn, WI has a population of 3,656 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 53521? ▼
The median household income in ZIP 53521 is $108,036, which is 42% above the national average of $76,288.
What is the average home value in ZIP 53521? ▼
The median home value in ZIP 53521 is $391,100, which is 41% above the national average of $278,155.
What is the demographic makeup of ZIP 53521? ▼
The largest racial group in ZIP 53521 is White at 90.8%. Hispanic or Latino residents make up 2.8% of the population.
How many businesses are in ZIP code 53521? ▼
ZIP code 53521 has 67 business establishments employing approximately 266 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 53521? ▼
The top industries by establishment count in ZIP 53521 are: Construction (17), Professional, scientific, and technical services (9), Administrative and support and waste management and remediation services (8). There are 10 industry sectors represented in total.
How have home values changed in ZIP code 53521? ▼
According to the FHFA House Price Index, home values in ZIP 53521 decreased by 0.3% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 141%. 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 53521? ▼
In ZIP code 53521, 64.8% of residents aged 25+ have a high school diploma or higher, and 35.4% 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 53521? ▼
The mean commute time for workers in ZIP code 53521 is 25.5 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend less time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 53521? ▼
In ZIP code 53521, approximately 88.3% of occupied housing units are owner-occupied and 11.7% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 53521? ▼
The poverty rate in ZIP code 53521 is 3.6% 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.