🇺🇸 United States ZIP Code

STANDARD

52237

Hopkinton

ZIP Code 52237 is a standard zip code serving Hopkinton, Hopkinton, Iowa (IA), in Delaware County, United States. It has an estimated population of 1,522 with a median household income of $52,708. The area falls within the America/Chicago timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Iowa (IA)
County: Delaware
City: Hopkinton
Timezone: America/Chicago

Coordinates

Latitude: 42.342200
Longitude: -91.246100

Geographic Details

Land Area: 81.22 mi²
Water Area: 0.04 mi²
Population Density: 19.0 people per mi² (20th percentile)
Bounding Box: 42.433809°N, 42.295744°S, -91.104893°E, -91.422321°W

With 1,522 residents spread across 81.22 square miles, this area has a population density of 19.0 people per square mile.

Demographics

1,522

Population

35th percentile

$52,708

Median Income

60th percentile

$112,900

Median Home Value

40th percentile

81.22 mi²

Land Area

The median household income in 52237 is $52,708, and the median home value is $112,900.

Housing

646

Total Units

590

Occupied Units

91.3%

Occupancy Rate

Similar ZIP Codes in Iowa

ZIP codes with similar median household income in Iowa.

50830

Afton

$51,154

50036

Boone

$49,792

50171

Montezuma

$58,355

50313

Des Moines

$50,403

52623

Danville

$53,571

51249

Sibley

$46,613

52306

Mechanicsville

$59,213

52768

Princeton

$52,337

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.