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Oskaloosa, Iowa

7 topographic sheets cover this place, the earliest surveyed in 1954 and the latest in 1982. It stands in Oskaloosa City. It lies in ZIP code area 52577. The Survey maps it on the Oskaloosa quadrangle. 11,558 people lived here at the 2020 count. It stands 840 feet above sea level.

Research this city

Oskaloosa within Mahaska County

On record in Oskaloosa

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 12 of 44 shown

Every listing in Mahaska County

Population over time

3 figures

Oskaloosa grew from 10,938 to 11,558 between 2000 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
200010,938
201011,463+525 (+5%)
202011,558+95 (+1%)

Topographic sheets covering this place

6 surveys from 7 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

26 since 2013

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 26 fires within 5 miles of Oskaloosa between 2013 and 2017, burning about 464 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 burning23
Missing data/not specified/undetermined2
Smoking1

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
3 May 2014Debris and open burning7.0 acresIowa Department of Natural Resourcesnot named
8 April 2014Debris and open burning2.0 acresIowa Department of Natural Resourcesnot named
8 April 2014Debris and open burning100 acresIowa Department of Natural Resourcesnot named
6 April 2014Debris and open burning4.0 acresIowa Department of Natural Resourcesnot named
5 April 2013Debris and open burning4.0 acresIowa Department of Natural Resourcesnot named
17 April 2015Debris and open burning25 acresIowa Department of Natural Resourcesnot named
15 April 2015Debris and open burning10 acresIowa Department of Natural Resourcesnot named
14 April 2015Debris and open burningunder an acreIowa Department of Natural Resourcesnot named

Settlements close enough to share some of these fires:

Every fire recorded in Mahaska County

Mines and quarries near this place

10 of 12 shown

Regional context, not property-specific evidence. The federal mineral resources record lists 12 workings within 5 miles of Oskaloosa: 11 past producers, 1 producer. 1 still produces. What was taken out: Stone, Crushed/Broken, Sand and Gravel, Construction, Zinc, Clay, Bituminous. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Where SiteCommodity StatusRecorded
Drill HoleZincPast ProducerSphalerite
Oskaloosa Clay Products Co. PitClayPast Producer
Oskaloosa Paving Brick Co.Clay, BituminousPast Producer
UnknownSand and Gravel, ConstructionPast Producer
UnknownSand and Gravel, ConstructionPast Producer
UnknownSand and Gravel, ConstructionPast Producer
Givin QuarryStone, Crushed/BrokenPast Producer
Langstraat QuarryStone, Crushed/BrokenPast Producer
Oskaloosa Mine & MillStone, Crushed/BrokenProducer
UnknownStone, Crushed/BrokenPast Producer

Every working recorded in Mahaska County

Storms near this place

60 of 137 shown

Regional context, not property-specific evidence. The National Weather Service names Oskaloosa in 137 storm reports between 1993 and 2024: 53 thunderstorm wind, 30 hail, 26 heavy rain, 11 flood. The reports record 1 injury. 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
August 1996LightningOskaloosa1 hurtno account filed
May 1996HailOskaloosa$530,000no account filed
May 1996Flash FloodOskaloosa$500,000no account filed
June 2000Flash FloodOskaloosa$350,000no account filed
June 1997Thunderstorm WindOskaloosa$300,000no account filed
August 2010Flash FloodOskaloosa$200,000Iowa DOT and local media report Highway 92 closed east of Oskaloosa due to the flooding from Spring Creek.
August 1998LightningOskaloosa$200,000no account filed
July 2015Thunderstorm WindOskaloosa$100,000A large tree fell on an apartment building. Four of the apartments had to be evacuated.
June 2010Flash FloodOskaloosa$100,000Estimated 4-5 inches of rainfall.
April 2007FloodOskaloosa$100,000no account filed
April 2014Thunderstorm WindOskaloosa$75,000Roof taken off of the Oskaloosa Family Medical Center.
June 1996LightningOskaloosa$75,000no account filed
April 2012HailOskaloosa$50,000Quarter size hail and winds of 60 to 70 MPH.
June 2011Flash FloodOskaloosa$50,000Highway 92 closed from T25 to U.S. Highway 163 by flash flooding.
May 2008Thunderstorm WindOskaloosa$50,000Debris from a pole barn were spread one half mile to the east and north.
October 2007FloodOskaloosa$50,000no account filed
May 2003HailOskaloosa$50,000no account filed
June 1998FloodOskaloosa$50,000no account filed
June 1998Thunderstorm WindOskaloosa$50,000no account filed
May 1996FloodOskaloosa$50,000no account filed
May 1996FloodOskaloosa$50,000no account filed
August 1993Thunderstorm WindOskaloosa$50,000no account filed
June 2001Tornado (F1)Oskaloosa$40,000Brief touchdown on a farm northeast of Oskaloosa. Several buildings damaged.
June 1998Thunderstorm WindOskaloosa$40,000no account filed
July 2016Thunderstorm WindOskaloosa$30,000Media reported a semi blown over on Glendale Road. Time radar estimated.
September 2013Thunderstorm WindOskaloosa$30,000Several 4 to 6 inch diameter trees down throughout Oskaloosa.
July 2016Thunderstorm WindOskaloosa$25,000Emergency Manager reported widespread tree damage across town, mostly branches and limbs broken off. Numerous areas remained without power as well. Time radar estimated.
June 2008Flash FloodOskaloosa$25,000Street flooding was reported in Oskaloosa between 2nd and 3rd streets.
May 2007FloodOskaloosa$25,000no account filed
June 2001Thunderstorm WindOskaloosa$25,000no account filed
June 1998FloodOskaloosa$25,000no account filed
July 1998FloodOskaloosa$25,000no account filed
May 1996HailOskaloosa$25,000no account filed
August 2007Flash FloodOskaloosa$20,000no account filed
May 2003HailOskaloosa$20,000no account filed
August 2004LightningOskaloosa$15,000no account filed
July 2018Thunderstorm WindOskaloosa$10,000Law enforcement reported tree limbs down, of unknown size, on power lines in Oskaloosa.
September 2018Flash FloodOskaloosa$10,000Local law enforcement reported water over the road.
June 2015HailOskaloosa$10,000Public report of hail around 2 inches in diameter in Oskaloosa. Photos from KCCI ulocal page.
April 2014Thunderstorm WindOskaloosa$10,000Numerous trees up to 24 inch diameter downed.
June 2011Thunderstorm WindOskaloosa$10,000From KBOE radio station reported by Weather Eye.
June 2010Flash FloodOskaloosa$10,000Water flowing over the road about 6 inches deep along 4th Ave east between South 3rd and South 1st St.
March 2009FloodOskaloosa$10,000Higyway 92 was closed at mile post 178 due to flooding.
May 2008Thunderstorm WindOskaloosa$10,000A canopy was blown away by winds estimated at 60 to 70 MPH.
May 2008Thunderstorm WindOskaloosa$10,000Power lines were blown down on south 3rd St.
July 1995Thunderstorm WindOskaloosa$10,000A weak cold front sagged southeast into Iowa during the day as an upper level disturbance drifted east into the state. The air mass was moist and quiet unstable. Thunderstorms developed during the afternoon over the east two thirds of the state. One storm became severe as it moved through Mahaska County. High winds were reported two times in Oskaloosa. The winds resulted in spotty damage, downed trees, and knocked out power in the Oskaloosa area.
June 2011HailOskaloosa$10,000no account filed
June 2011HailOskaloosa$10,000no account filed
June 2011HailOskaloosa$10,000no account filed
June 2009Thunderstorm WindOskaloosa$10,000no account filed
August 2007Flash FloodOskaloosa$10,000no account filed
July 2004Thunderstorm WindOskaloosa$10,000no account filed
May 2003HailOskaloosa$10,000no account filed
June 1998Thunderstorm WindOskaloosa$10,000no account filed
July 1998FloodOskaloosa$10,000no account filed
May 1996HailOskaloosa$10,000no account filed
July 2019Thunderstorm WindOskaloosa$5,000Mahaska County emergency manager reported many instances of tree damage and power outages across the county. Time estimated from radar, via the center of the county.
August 2018Thunderstorm WindOskaloosa$5,000Law enforcement reported a large tree down blocking the road near the intersection of N 9th Street and B Ave East. Time estimated from radar.
July 2016Thunderstorm WindOskaloosa$5,000Public reported trees down in town. Time radar estimated.
April 2012Thunderstorm WindOskaloosa$5,000Estimated winds of 60 MPH along with pea size hail.

Every storm recorded in Mahaska 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
University Park1.5 miles7
Beacon2.3 miles7
Evans4.4 miles7
Givin5.0 miles7
Bolton (historical)5.5 miles7
Keomah Village5.7 miles7
Wright7.1 miles7
Lacey7.2 miles7

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 OskaloosaAn encyclopaedic summary. Its text is share-alike, so it is linked here rather than copied.
Wikidata item Q984370The 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 459908. 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.

Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.

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.