What city is 52738 in?

52738 is a Columbus Junction, IA mailing address. By land area, 2% lies inside Columbus Junction; the rest is outside any Census-defined city or community.

What is the population of 52738?

About 3,398 people (±318), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 3,404.

What is the median household income in 52738?

$80,385 (±$14,374), compared with $75,059 for Iowa as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 52738?

4 USPS carrier routes with 1,289 residential and 82 business mailboxes (1,371 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 52738?

The closest, measured center to center: 52737 (1 mi, Columbus City), 52739 (6.9 mi, Conesville), 52754 (8.4 mi, Letts), 52621 (9.3 mi, Crawfordsville), 52201 (9.6 mi, Ainsworth) and 52752 (9.7 mi, Grandview).

52738 ZIP Code, Columbus Junction, IA

52738 is a ZIP code in Columbus Junction, Iowa in Louisa County. It covers 123 square miles of land. The closest ZIP codes are 52737, 52739 and 52754. 3,398 people live here in 1,160 households. It is rural, with fewer than 100 people per square mile, and most homes are owner-occupied (80%). Median household income is $80,385, close to the Iowa median of $75,059.

Quick facts

Mailing city: Columbus Junction, IA
County: Louisa County
Land area: 123 sq mi
Population: 3,398
Median household income: $80,385
Carrier routes: 4 (1,289 homes)

Key figures

Measure	Value
Residents	3,398
Households	1,160
Median household income	$80,385
Income per person	$33,829
Median age	36.6
Homeowners	80.2%
Median home value	$145,700
Median rent	$643
Bachelor's degree or higher	22.2%
Average commute (minutes)	27.7
Households with kids under 18	35.1%
Moved in the past year	10.7%
Below the poverty line	11.8%
Broadband internet	87.2%
Speak a non-English language at home	37.3%

Household income

% of households	Value
<$10K	2.8%
$10–15K	1.4%
$15–25K	7.1%
$25–35K	8.7%
$35–50K	8.3%
$50–75K	19.6%
$75–100K	15.7%
$100–150K	24.5%
$150–200K	6.3%
$200K+	5.8%

Age

% of all residents	Value
<10	14.6%
10–19	12.7%
20–24	5.3%
25–34	15.5%
35–44	11.2%
45–54	10.7%
55–64	12.7%
65–74	10.3%
75+	7.2%

Tenure

% of housing units	Value
Owned, with mortgage	29.9%
Owned outright	39.4%
Rented	17.1%
Vacant	13.6%

Type of building

% of housing units	Value
Detached house	78.2%
Townhome	1.4%
2–4 units	7.9%
5–19 units	2.0%
20+ units	0.7%
Mobile / other	9.7%

Businesses in 52738

71 business establishments with 1,908 employees (ZIP Codes Business Patterns 2023).

Retail Trade: 11
Other Services (except Public Administration): 10
Construction: 7
Health Care and Social Assistance: 7
Administrative and Support and Waste Management and Remediation Services: 6
Transportation and Warehousing: 5
Professional, Scientific, and Technical Services: 4
Accommodation and Food Services: 4

EDDM carrier routes

52738 has 4 USPS carrier routes with 1,289 residential and 82 business mailboxes. Open the EDDM route map.

Carrier routes in 52738

52738 has 4 USPS carrier routes (1 city (C), 3 rural (R)) with 1,289 residential and 82 business mailboxes. Routes range from 212 homes (R001) to 396 homes (R003); the median route has 341 homes. The Census counted 1,160 households in 52738 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	1
250–499	3
500–749	0
750–999	0
1,000–1,499	0
1,500+	0

Best routes in 52738 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

Route C001 — USPS business mailboxes 55, 365 homes
Route R003 — USPS business mailboxes 10, 396 homes
Route R001 — USPS business mailboxes 10, 212 homes
Route R002 — USPS business mailboxes 7, 316 homes

Select these 4 routes on the route map

Every carrier route in 52738

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	365	55	$68,876	—	—	—
R001	Rural	212	10	$56,073	—	—	—
R002	Rural	316	7	$84,607	—	—	—
R003	Rural	396	10	$56,073	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 52738 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

52737 — Columbus City city, IA (1 mi)
52739 — Conesville city, IA (6.9 mi)
52754 — Letts city, IA (8.4 mi)
52621 — Crawfordsville city, IA (9.3 mi)
52201 — Ainsworth city, IA (9.6 mi)
52752 — Grandview city, IA (9.7 mi)
52659 — Winfield city, IA (10.2 mi)
52640 — Morning Sun city, IA (12.9 mi)

Areas that include 52738

Columbus Junction, IA ZIP codes — 1 ZIP code
Fredonia, IA ZIP codes — 1 ZIP code
Cotter, IA ZIP codes — 1 ZIP code
Louisa County ZIP codes — 10 ZIP codes
Iowa ZIP code data

Where it ranks

Mail every home in 52738

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 52738, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 52738 in?: 52738 is a Columbus Junction, IA mailing address. By land area, 2% lies inside Columbus Junction; the rest is outside any Census-defined city or community.
What county is 52738 in?: 52738 is in Louisa County.
What is the population of 52738?: About 3,398 people (±318), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 3,404.
What is the median household income in 52738?: $80,385 (±$14,374), compared with $75,059 for Iowa as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 52738?: 4 USPS carrier routes with 1,289 residential and 82 business mailboxes (1,371 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 52738?: The closest, measured center to center: 52737 (1 mi, Columbus City), 52739 (6.9 mi, Conesville), 52754 (8.4 mi, Letts), 52621 (9.3 mi, Crawfordsville), 52201 (9.6 mi, Ainsworth) and 52752 (9.7 mi, Grandview).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.