BlockBefore

Irwin, Iowa

8 topographic sheets cover this place, the earliest surveyed in 1954 and the latest in 1980. It stands in Jefferson Township. It lies in ZIP code area 51446. The Survey maps it on the Irwin quadrangle. 319 people lived here at the 2020 count. It stands 1,289 feet above sea level.

Irwin within Shelby County

On record in Irwin

Buildings and businesses the archive holds for this place. Each opens its own page, with the source record it came from.

On the National Register 2 records

Population over time

2 figures

Irwin fell from 341 to 319 between 2010 and 2020. These are the recorded population figures Wikidata holds for this place, reached through the Geographic Names Information System number this page is keyed on rather than by name, so they belong to this place and not to another of the same name. Most are census counts, but not all are: an early figure may be a founding or settlement estimate, and an estimate published within five years of a census is left out. The change column is computed, and is left blank where more than 20 years separate a figure from the one before it, because a gap that long is not a change between two counts.

YearPeople Change
2010341
2020319-22 (-6%)

Topographic sheets covering this place

5 surveys from 8 printed sheets

Matched by testing this settlement's coordinate against the published boundary of every sheet in the United States Geological Survey's historical collection. Each opens the scanned sheet at the Survey.

Fires near this place

9 since 2007

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 9 fires within 5 miles of Irwin between 2007 and 2014, burning about 489 acres in total. None started naturally. None was recorded as arson. Distance is straight-line from the map coordinates, so a fire counted here may appear on a neighbouring settlement's page as well.

Reported cause Fires
Debris and open burning4
Missing data/not specified/undetermined3
Equipment and vehicle use2

The most recent of them, most recent first, with the day each was reported and the service that recorded it.

DateCause SizeReported by Name on the report
22 September 2007Missing data/not specified/undetermined1.0 acresIowa Department of Natural Resourcesnot named
25 April 2013Missing data/not specified/undetermined5.0 acresIowa Department of Natural Resourcesnot named
25 April 2013Equipment and vehicle use5.0 acresIowa Department of Natural Resourcesnot named
20 April 2013Debris and open burning6.0 acresIowa Department of Natural Resourcesnot named
31 March 2014Debris and open burningunder an acreIowa Department of Natural Resourcesnot named
28 March 2014Debris and open burning2.0 acresIowa Department of Natural Resourcesnot named
26 March 2014Debris and open burning340 acresIowa Department of Natural Resourcesnot named
26 March 2014Equipment and vehicle use130 acresIowa Department of Natural Resourcesnot named

Settlements close enough to share some of these fires:

Every fire recorded in Shelby County

Storms near this place

21 since 1996

Regional context, not property-specific evidence. The National Weather Service names Irwin in 21 storm reports between 1996 and 2024: 11 hail, 8 thunderstorm wind, 1 heavy rain, 1 tornado. No death or injury is recorded in these reports. Each account below is quoted exactly as the forecast office filed it, from the NOAA Storm Events Database, and each date opens the federal record of that event.

WhenEvent Place namedHarm What the report says
April 2024Tornado (EF1)Irwin-This tornado touched down in the V and W Petersen Wildlife Management Area, less than half a mile south of the Shelby-Crawford County border between Road M36 and Quince Road. This tornado quickly moved into Crawford County, but not before snapping several tree trunks on 2500th Street. Here, EF-1 damage was noted, with peak winds estimated at 107 miles per hour. The tornado continued into Crawford County where it completely destroyed a barn 1 mile northwest of Manilla, Iowa, resulting in a final EF-2 rating for the tornado. In Shelby County, the tornado reached a peak width of 100 yards, with an average width estimated at 50 yards.
September 2019Thunderstorm WindIrwin-Several large branches 10-15 inches in diameter were blown down in thunderstorm winds.
July 2016Thunderstorm WindIrwin-The emergency manager reported that a roof was lifted off a barn.
August 2014Thunderstorm WindIrwin-The gust was estimated by the a trained spotter.
June 2011Thunderstorm WindIrwin-The public estimated that thunderstorm wind gusts reached around 60 mph in the Irwin area.
June 2009Thunderstorm WindIrwin-A spotter in the Irwin area stated that healthy tree branches, some up to a few inches in diameter, were downed by thunderstorm winds that were estimated at close to 60 mph.
April 2008HailIrwin-Most of the hail was penny or nickel size, but a few of the stones were around quarter size.
May 2007Heavy RainIrwin-The cooperative observer near Irwin reported a 24 hour rainfall amount of 4.55 inches.
July 2006Thunderstorm WindIrwin-Thunderstorm winds estimated at 60 mph downed 4 inch in diameter tree limbs in town.
November 2015Thunderstorm WindIrwin-no account filed
May 2014HailIrwin-no account filed
June 2008HailIrwin-no account filed
May 2005HailIrwin-no account filed
May 2005HailIrwin-no account filed
May 2004HailIrwin-no account filed
April 2002HailIrwin-no account filed
April 1999HailIrwin-no account filed
July 1999HailIrwin-no account filed
May 1998HailIrwin-no account filed
May 1998Thunderstorm WindIrwin-no account filed
June 1996HailIrwin-no account filed

Every storm recorded in Shelby County

Nearest settlements

The eight closest, with where each one stands in the county. Distances are straight-line, computed from the Geographic Names Information System coordinates.

Map PlaceDistance Sheets
Kirkman5.4 miles8
Red Line5.9 miles8
Botna5.9 miles8
Fiscus7.0 miles8
Defiance7.6 miles8
Poplar9.3 miles8
Jacksonville10.5 miles8
Westphalia11.2 miles8

Elsewhere

Matched on this settlement's Geographic Names Information System number rather than its name, so it cannot be a different place of the same name in another state.

Wikipedia article on IrwinAn encyclopaedic summary. Its text is share-alike, so it is linked here rather than copied.
Wikidata item Q1931668The structured record the population and elevation above come from. Public domain (CC0).

Provenance

This settlement is recorded in the Geographic Names Information System as feature 457863. The sheet list is computed by point-in-boundary test against the United States Geological Survey's historical topographic inventory. Both are works of the United States government and carry no copyright under 17 U.S.C. 105.

Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.

Storms. NOAA National Centers for Environmental Information, Storm Events Database https://www.ncei.noaa.gov/stormevents/ A work of the United States government, no copyright under 17 U.S.C. 105. Narratives are quoted verbatim from the National Weather Service report and are not edited or summarised.