Fort Irwin, California

The same ground, surveyed 60 years apart. Drag the handle to wipe between them. Both sheets are United States Geological Survey originals; neither has been altered.

1933 1993

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 1 record

• Pioneer Deep Space StationNational Historic Landmark · listed 1985

Fort Irwin fell from 8,845 to 8,096 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.

• 1933 USGS Avawatz Mountains quadrangle1:250000, 5 printings
• 1947 USGS Trona quadrangle1:250000
• 1948 USGS Tiefort Mountains quadrangle1:62500, 2 printings
• 1948 USGS Trona quadrangle1:250000
• 1951 USGS Tiefort Mountains quadrangle1:62500
• 1953 USGS Trona quadrangle1:250000
• 1957 USGS Trona quadrangle1:250000, 5 printings
• 1960 USGS Trona quadrangle1:250000, 2 printings
• 1986 USGS Fort Irwin quadrangle1:24000, 3 printings
• 1993 USGS Soda Mountains quadrangle1:100000

Regional context, not property-specific evidence. The federal mineral resources record lists 2 workings within 5 miles of Fort Irwin: 1 past producer, 1 prospect. None of them still produces. What was taken out: Bentonite. 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 San Bernardino 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 1666886. 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.

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.