Cairo, Ohio

Cairo fell from 524 to 517 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. 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.

The same ground, surveyed 80 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

1906 1986

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.

• 1906 USGS Columbus Grove quadrangle1:62500
• 1908 USGS Columbus Grove quadrangle1:62500
• 1953 USGS Muncie quadrangle1:250000
• 1953 USGS Muncie quadrangle1:250000
• 1953 USGS Muncie quadrangle1:250000
• 1953 USGS Muncie quadrangle1:250000
• 1953 USGS Muncie quadrangle1:250000
• 1956 USGS Muncie quadrangle1:250000
• 1960 USGS Cairo quadrangle1:24000
• 1960 USGS Cairo quadrangle1:24000
• 1960 USGS Cairo quadrangle1:24000
• 1960 USGS Cairo quadrangle1:24000
• 1986 USGS Lima quadrangle1:100000
• 1986 USGS Lima quadrangle1:100000
• 1986 USGS Lima quadrangle1:100000

History of Allen County, Ohio. Containing a History of the County, Its Townships, Towns, Villages, Schools, Churches, Industries, Etc; Portraits of Early Settlers and Prominent Men; Biographies; History of the Northwest Territory; History of Ohio; Statistical and Miscellaneous Matter, Etc., Etc, published 1885 names this settlement in its chapter on Monroe Township. These are the passages that mention it, exactly as the scans read.

Regional context, not property-specific evidence. Museums hold 120 specimens collected within 10 miles of Cairo between 1893 and 1975: 101 Animalia, 18 Fungi, 1 Plantae. 12 distinct Species records are shown. Collected by Adler, K. K., Amstutz, K., Bezdek, H. and others. Each is a physical object with a catalogue number, and each entry opens the museum's record. This is what was collected and kept, not a survey of what lives here - nothing can be concluded from a species being absent.

Image	Species	Year	Collected by	Where, as recorded
	Medicago sativa L.	1961	Robert H. Gray	1 mile west of Lafayette.
	Chrysemys picta (Schneider, 1783)	1893	not recorded	Cloverdale, Sugar Creek
	Etheostoma spectabile (Agassiz, 1854)	1893	PH Kirsch	Sugar Creek, 2 miles north of Lima; Maumee River dr.
	Lepomis cyanellus Rafinesque, 1819	1893	P. Kirsch	Lost Creek, Lima, Ohio
	Lithobates pipiens (Schreber, 1782)	1893	not recorded	Lima, Sugar Creek
	Nerodia sipedon (Linnaeus, 1758)	1893	not recorded	Lima, Sugar Creek
	Regina septemvittata (Say, 1825)	1893	not recorded	Lima, Sugar Creek
	Thamnophis sirtalis (Linnaeus, 1758)	1893	not recorded	Lima, Sugar Creek
	Amanita frostiana (Peck) Sacc.	1902	C. W. Dawson	Lima
	Amanita rubescens Pers.	1902	C. W. Dawson	Lima
	Amanita vaginata (Bull.) Lam.	1902	C. W. Dawson	Lima
	Flammula sapinea (Fr.) P.Kumm.	1902	C. W. Dawson	Lima

All 120 specimens within 10 miles, at the Global Biodiversity Information Facility.

Regional context, not property-specific evidence. The federal mineral resources record lists 1 working within 5 miles of Cairo: 1 producer. All of them still produce. What was taken out: Sand and Gravel, Construction. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.

Every working recorded in Allen County

Regional context, not property-specific evidence. The National Weather Service names Cairo in 13 storm reports between 1998 and 2022: 7 thunderstorm wind, 3 hail, 1 lightning, 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.

Every storm recorded in Allen County

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

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.

This settlement is recorded in the Geographic Names Information System as feature 1056752. 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.

Specimens. Global Biodiversity Information Facility (GBIF), https://www.gbif.org/. Only records licensed CC0 or CC BY are used. Records licensed CC BY-NC are excluded because this site carries advertising. Images are checked individually and any whose licence is non-commercial, no-derivatives or unreadable is refused.

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.