Marshalltown Municipal (KMIW), Iowa
Landing essentials
Whether you can land, whether you can refuel, and how customs works here.
Overview
Marshalltown Municipal Airport (KMIW) is a non-towered public-use field in central Iowa, roughly 43 nautical miles from the nearest metro area, serving business aviation traffic at a moderate volume. The airport has no customs office on site, with the nearest customs point of entry at Des Moines International (KDSM), about 48 nautical miles away. KMIW offers 100LL and Jet A fuel, with attendant service scheduled daily from 0800 to 1700 local time.
Runways
Marshalltown Municipal has two paved runways. The longest, 13/31, is 5,007 ft long and 100 ft wide, with an asphalt surface.
Runway geometry from published threshold coordinates. Not for navigation.
Runways are listed longest first.
Source: FAA Form 5010.
Fuel and airfield services
Marshalltown Municipal has Jet A and 100LL available on the field. Fueling is available from 8am to 5pm, daily, and the airport has no control tower.
Source: FAA Form 5010 / NASR.
Customs
Marshalltown Municipal does not clear customs. The nearest port of entry is Des Moines International (KDSM), 48 NM away.
Source: CBP list of ports of entry.
Business aviation traffic
Marshalltown Municipal recorded 394 business aviation movements in 2025. Traffic peaks in April. Business aviation traffic at KMIW is concentrated in the spring and summer months, with April, August, and June recording the highest operations counts in 2025.
Business jet movements, FAA TFMSC count. Peak month April, 55 movements in 2025.
Source: FAA TFMSC, business jet movements, 2025.
Climate
Marshalltown Municipal averages 4.6 days above 90°F in July and 30.3 freeze days in January. July is the warmest month, with average highs of 83.1°F, and January the coldest, at 27.7°F.
Weather station is on the field. Some values are estimated by the agency. 1991–2020 climate normals.
Source: NOAA NCEI.
Operating constraints
Marshalltown Municipal has published operating constraints in two categories: access and runway notes.
For clearance delivery, contact Des Moines Approach on frequency 120.9. When Des Moines Approach is closed, contact Minneapolis Center for clearance delivery instead.
Runway edge lights for runways 13/31 and 18/36, along with REIL and VASI on runways 13 and 31, are pilot-activated on the CTAF.
Source: FAA Chart Supplement.
Nearby airfields
Marshalltown Municipal has five airfields within 33 NM. The closest is Grinnell Regional (KGGI), 25.52 NM south.
Part of the Des Moines and Iowa area.
Source: Skystar calculation from official coordinates.
Skystar at KMIW
We arrange catering, fuel and trip support here. Supplier prices reach you unchanged; our coordination fee sits on its own line.
The same order, priced two ways.
$1,200.00 catering order at KMIW.
Unchanged.
What the kitchen invoices us is what your quote reads.
One line, fixed.
It does not move with the size of the order.
At cost.
Passed on at the exact amount the processor took.
Market practice figures are industry averages, not a specific competitor.
Frequently asked questions
What runways are available at KMIW?
Marshalltown Municipal Airport (KMIW) has two paved asphalt runways. Runway 13/31 is the longer of the two at 5,007 feet by 100 feet wide, and it also carries the airport's maximum paved runway length. Runway 18/36 measures 2,759 feet by 50 feet wide. Both surfaces are asphalt, giving operators a choice depending on aircraft size and wind conditions.
Is there customs clearance available at KMIW?
Marshalltown Municipal Airport (KMIW) does not have customs service on site. The nearest customs point of entry is Des Moines International (KDSM), located approximately 48 nautical miles away. Operators requiring customs clearance need to route through KDSM or another designated port of entry before or after a stop at KMIW.
What are the fuel options at Marshalltown Municipal Airport?
Marshalltown Municipal Airport (KMIW) stocks both 100LL avgas and Jet A fuel. Fuel and airport attendance follow a daily schedule from 0800 to 1700 local time, every day of the week. Operators planning arrivals outside this window should account for the attendance schedule when coordinating fuel needs.
How busy is KMIW with business aviation traffic?
KMIW recorded 394 business aviation operations in 2025 out of 466 total annual operations, according to FAA TFMSC data, placing it in the moderate-traffic tier. Traffic is not spread evenly through the year, with spring and summer months such as April, June, and August showing higher activity than the winter months. This seasonal pattern is worth noting for scheduling and staffing coordination at Marshalltown Municipal Airport.