PlainZIP

Boyden, IA · standard

ZIP Code 51234

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

1,268
10/sq mi
$84,318
Median income
$211,800
Median home value
28.0%
Bachelor's or higher

The verdict

Boyden pairs an above-median household income with below-median home values, in a rural, homeowner-dominated area.

Top 33%
household income, US ZIPs
47th pct
home value, US ZIPs
10
people per sq mi
91%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 51234 against every reporting US ZIP.

ZIP code 51234 is a sparsely populated ZIP (a standard USPS delivery area) in Boyden, Sioux County, Iowa, home to just 1,268 residents across 129.4 square miles, a density of 10 people per square mile, in the Chicago time zone.

ZIP 51234 lands in the middle-income range, with a median household income of $84,318 (10% above the Iowa average), while per-capita income is $34,801. The poverty rate stands at 9.8% and the unemployment rate at 0.3%. The typical home here is valued at $211,800 (21% above the state average); renters pay a median of $762 monthly, and 90.5% of units are owner-occupied.

Educational attainment sits below the national norm: 28.0% of adults hold a bachelor's degree or higher, the median age is 32.3, and the average commute is -. To put 51234 in local context, 4 ZIP codes within roughly 10 miles appear further down this page alongside 6 additional ZIPs in Sioux 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 51234

Top 5 sectors by establishment count in Boyden, IA

Which industries have the most business establishments in ZIP 51234.

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 51234, Boyden, IA · 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

1,268

Population

129.4

Area (sq mi)

10

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 51234?

32.3

Median Age

56.4%

Male

43.6%

Female

1.4%

Foreign-Born

White 95.3%
African American 0.4%
Asian 1.0%
American Indian or Alaska Native 0.8%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 0.4%
Hispanic or Latino 8.4%

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?

$84,318

Median Household Income

+10% vs state

$34,801

Per Capita Income

9.8%

Poverty Rate

0.3%

Unemployment Rate

How ZIP 51234 ranks nationally

Boyden, IA household income vs. every US ZIP code

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

$84,318 Top 33% higher than 67% 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%). This entry sits in this band. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $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 67.9%
Bachelor's Degree or Higher 28.0%

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

What does housing look like?

414

Total Housing Units

412

Occupied Units

2

Vacant Units

2.84

Avg Household Size

Occupancy Type

Owner 90.5%
Renter 9.5%

$211,800

Median Home Value

+21% vs state

$762

Median Rent

1964

Median Year Built

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

What businesses operate in this ZIP?

Census Bureau data shows 22 business establishments in ZIP 51234, employing approximately 529 people with a combined annual payroll of $30,276,000.

22

Businesses

529

Employees

$30.3M

Annual Payroll

4

Industry Sectors

Industry Establishments % of Total
Construction 4 18.2%
Manufacturing 4 18.2%
Other services (except public administration) 4 18.2%
Transportation and warehousing 3 13.6%

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 51234 vs 51239 →

ZIP 51234 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 51234 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 51234 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 51234 ranks the highest of 5 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
51239 Hull, IA 3,123 6.4 mi
51244 Matlock, IA 79 5.5 mi
51237 George, IA 1,703 9.9 mi
51238 Hospers, IA 1,184 10.3 mi

More ZIP Codes in Sioux County

51250 standard
Sioux Center, IA
Pop: 8,249
51041 standard
Orange City, IA
Pop: 6,976
51247 standard
Rock Valley, IA
Pop: 4,870
51023 standard
Hawarden, IA
Pop: 3,216
51239 standard
Hull, IA
Pop: 3,123
51003 standard
Alton, IA
Pop: 1,700

Related Areas

Sioux County Boyden, IA Iowa

Frequently Asked Questions

What county is ZIP code 51234 in? ▼
ZIP code 51234 (Boyden) is located in Sioux County, Iowa. Sioux County contains multiple ZIP codes, see the full list at /counties/sioux-ia.
What is the population of ZIP code 51234? ▼
ZIP code 51234 in Boyden, IA has a population of 1,268 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 51234? ▼
The median household income in ZIP 51234 is $84,318, which is 11% above the national average of $76,288.
What is the average home value in ZIP 51234? ▼
The median home value in ZIP 51234 is $211,800, which is 24% below the national average of $278,155.
What is the demographic makeup of ZIP 51234? ▼
The largest racial group in ZIP 51234 is White at 95.3%. Hispanic or Latino residents make up 8.4% of the population.
How many businesses are in ZIP code 51234? ▼
ZIP code 51234 has 22 business establishments employing approximately 529 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 51234? ▼
The top industries by establishment count in ZIP 51234 are: Construction (4), Manufacturing (4), Other services (except public administration) (4). There are 4 industry sectors represented in total.
What is the education level in ZIP code 51234? ▼
In ZIP code 51234, 67.9% of residents aged 25+ have a high school diploma or higher, and 28.0% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 51234? ▼
In ZIP code 51234, approximately 90.5% of occupied housing units are owner-occupied and 9.5% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 51234? ▼
The poverty rate in ZIP code 51234 is 9.8% 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.