Silvis, Illinois

Silvis grew from 7,479 to 8,003 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.

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.

• 1892 USGS Leclaire quadrangle1:62500
• 1893 USGS Leclaire quadrangle1:62500, 4 printings
• 1899 USGS Clinton quadrangle1:125000
• 1899 USGS Cordova quadrangle1:125000, 4 printings
• 1949 USGS Silvis quadrangle1:24000
• 1953 USGS Silvis quadrangle1:24000, 3 printings
• 1958 USGS Davenport quadrangle1:250000, 2 printings
• 1961 USGS Davenport quadrangle1:250000
• 1962 USGS Davenport quadrangle1:250000
• 1984 USGS Davenport quadrangle1:100000, 2 printings
• 1991 USGS Silvis quadrangle1:24000

Historic Rock Island County; History of the Settlement of Rock Island County from the Earliest Known Period to the Present Time ... Embracing References of Importance, and Including a Biography of Rock Island County's Well-known Citizens, published 1908 has no passage naming this settlement, which was common for smaller places. Its township is covered in full.

Regional context, not property-specific evidence. The federal wildfire occurrence database lists 1 fire within 5 miles of Silvis in 2017, burning about 1 acre 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.

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

Settlements close enough to share some of these fires:

• Babcock
• Barstow
• Cedar Brook
• Hampton
• Port Byron
• Rapids City

Every fire recorded in Rock Island County

Regional context, not property-specific evidence. The federal mineral resources record lists 2 workings within 5 miles of Silvis: 2 past producers. None of them still produces. What was taken out: Sand and Gravel, Construction, Stone, Crushed/Broken. 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 Rock Island County

Regional context, not property-specific evidence. The National Weather Service names Silvis in 8 storm reports between 1997 and 2026: 5 thunderstorm wind, 3 hail. 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 Rock Island 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 418518. 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.