What city is 50158 in?

50158 is a Marshalltown, IA mailing address. By land area, 9% lies inside Marshalltown; the rest is outside any Census-defined city or community.

What is the population of 50158?

About 31,396 people (±453), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 31,466.

What is the median household income in 50158?

$70,367 (±$3,303), 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 50158?

23 USPS carrier routes with 12,585 residential and 732 business mailboxes (13,320 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 50158?

The closest, measured center to center: 50142 (7.1 mi, Le Grand), 50078 (7.9 mi, Ferguson), 50005 (8.9 mi, Albion), 50120 (9.1 mi, Haverhill), 50148 (10.3 mi, Liscomb) and 50632 (10.6 mi, Garwin).

50158 ZIP Code, Marshalltown, IA

50158 is a ZIP code in Marshalltown, Iowa in Marshall County. It covers 212 square miles of land. The closest ZIP codes are 50142, 50078 and 50005. 31,396 people live here in 11,788 households, more than in 9 of every 10 Iowa ZIP codes. With about 148 people per square mile it is lightly settled, and most homes are owner-occupied (72%). Median household income is $70,367, close to the Iowa median of $75,059.

Quick facts

Mailing city: Marshalltown, IA
County: Marshall County
Land area: 212 sq mi
Population: 31,396
Median household income: $70,367
Carrier routes: 23 (12,585 homes)

Key figures

Measure	Value
Residents	31,396
Households	11,788
Median household income	$70,367
Income per person	$31,708
Median age	37.2
Homeowners	71.6%
Median home value	$140,700
Median rent	$892
Bachelor's degree or higher	21.3%
Average commute (minutes)	17.2
Households with kids under 18	31.4%
Moved in the past year	9.5%
Below the poverty line	12.8%
Broadband internet	87.0%
Speak a non-English language at home	30.5%

Household income

% of households	Value
<$10K	4.1%
$10–15K	3.6%
$15–25K	6.3%
$25–35K	8.7%
$35–50K	11.2%
$50–75K	19.6%
$75–100K	18.0%
$100–150K	18.1%
$150–200K	6.2%
$200K+	4.3%

Age

% of all residents	Value
<10	12.6%
10–19	16.2%
20–24	6.5%
25–34	11.8%
35–44	12.4%
45–54	10.5%
55–64	12.5%
65–74	10.4%
75+	7.3%

Tenure

% of housing units	Value
Owned, with mortgage	36.0%
Owned outright	30.3%
Rented	25.7%
Vacant	8.0%

Type of building

% of housing units	Value
Detached house	76.4%
Townhome	1.9%
2–4 units	7.0%
5–19 units	6.8%
20+ units	5.0%
Mobile / other	2.8%

Businesses in 50158

661 business establishments with 12,582 employees (ZIP Codes Business Patterns 2023).

Health Care and Social Assistance: 100
Retail Trade: 95
Other Services (except Public Administration): 83
Construction: 73
Accommodation and Food Services: 71
Finance and Insurance: 41
Professional, Scientific, and Technical Services: 37
Manufacturing: 27

EDDM carrier routes

50158 has 23 USPS carrier routes with 12,585 residential and 732 business mailboxes. Open the EDDM route map.

Carrier routes in 50158

50158 has 23 USPS carrier routes (17 city (C), 6 rural (R)) with 12,585 residential and 732 business mailboxes. Routes range from 30 homes (R002) to 775 homes (C020); the median route has 578 homes. The Census counted 11,788 households in 50158 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	1
250–499	6
500–749	14
750–999	2
1,000–1,499	0
1,500+	0

Best routes in 50158 for…

Most businesses

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

Route C011 — USPS business mailboxes 191, 483 homes
Route C020 — USPS business mailboxes 117, 775 homes
Route C008 — USPS business mailboxes 48, 702 homes
Route C001 — USPS business mailboxes 40, 628 homes
Route R006 — USPS business mailboxes 40, 583 homes

Select these 5 routes on the route map

Every carrier route in 50158

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C001	City	628	40	$59,228	—	—	—
C002	City	578	11	$49,314	—	—	—
C006	City	571	29	$66,412	—	—	—
C007	City	514	31	$51,524	—	—	—
C008	City	702	48	$87,575	—	—	—
C009	City	657	2	$71,707	—	—	—
C010	City	689	12	$71,707	—	—	—
C011	City	483	191	$49,314	—	—	—
C013	City	414	15	$83,481	—	—	—
C014	City	625	27	$51,313	—	—	—
C015	City	640	19	$51,524	—	—	—
C016	City	546	25	$80,338	—	—	—
C017	City	769	7	$59,228	—	—	—
C018	City	596	12	$75,000	—	—	—
C019	City	676	22	$81,741	—	—	—
C020	City	775	117	$75,000	—	—	—
C021	City	397	35	$59,228	—	—	—
R001	Rural	434	7	$78,261	—	—	—
R002	Rural	30	1	$61,944	—	—	—
R003	Rural	503	10	$70,182	—	—	—
R004	Rural	400	18	$98,219	—	—	—
R005	Rural	375	13	$94,365	—	—	—
R006	Rural	583	40	$98,219	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 50158 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

50142 — Le Grand city, IA (7.1 mi)
50078 — Ferguson city, IA (7.9 mi)
50005 — Albion city, IA (8.9 mi)
50120 — Haverhill city, IA (9.1 mi)
50148 — Liscomb city, IA (10.3 mi)
50632 — Garwin city, IA (10.6 mi)
50173 — Montour city, IA (11.3 mi)
50162 — Melbourne city, IA (11.8 mi)

Areas that include 50158

Marshalltown, IA ZIP codes — 1 ZIP code
Le Grand, IA ZIP codes — 2 ZIP codes
Green Mountain, IA ZIP codes — 2 ZIP codes
Marshall County ZIP codes — 17 ZIP codes
Iowa ZIP code data

Where it ranks

Mail every home in 50158

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) 50158, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 50158 in?: 50158 is a Marshalltown, IA mailing address. By land area, 9% lies inside Marshalltown; the rest is outside any Census-defined city or community.
What county is 50158 in?: 50158 is in Marshall County.
What is the population of 50158?: About 31,396 people (±453), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 31,466.
What is the median household income in 50158?: $70,367 (±$3,303), 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 50158?: 23 USPS carrier routes with 12,585 residential and 732 business mailboxes (13,320 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 50158?: The closest, measured center to center: 50142 (7.1 mi, Le Grand), 50078 (7.9 mi, Ferguson), 50005 (8.9 mi, Albion), 50120 (9.1 mi, Haverhill), 50148 (10.3 mi, Liscomb) and 50632 (10.6 mi, Garwin).

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