Swansea, IL Elevation & Topographic Map
Elevation
610 ft 185 m580 ft 175 m560 ft 170 m530 ft 160 m500 ft 155 m490 ft 150 m
Contours every 100 ft, bold every 500 ft
USGS 3DEP · U.S. Census Bureau
How to use this mapviews, tools and data
- Elevation
- Ground colored by height from green (lowest) to white (highest), with contour lines every 40–500 ft (USGS data).
- Satellite
- A 2016 satellite photo at 33 ft (10 m) detail; contours off.
- 3D
- Tilt and turn the terrain; hills are raised 1.5×, or set ×1 for true height.
- Click or tap anywhere
- The exact elevation of that spot in ft and m.
- Measure
- Pick two points for the climb, descent and grade along a straight line.
- Village area
- Fades everything outside the official village limits (US Census).
Elevation Data
Swansea sits at about 570 ft (175 m) above sea level, worked out from 2020 Census block heights on USGS 3DEP, weighted by residents.
Typical elevation
570 ft 175 m
most residents: 520–600 ft
Lowest
490 ft 150 m
on the southeast side
Highest
610 ft 185 m
on the north side
Average
560 ft 170 m
all land inside village limits
Swansea spans about 120 ft of height, so no single spot tells the whole story. The ruler shows where its people live, and where the other numbers you'll see come from.
| Figure | Elevation |
|---|---|
| Typical Where people live: half of residents higher, half lower | 570 ft175 m |
| Highest point Inside village limits, on the north side | 610 ft185 m |
| Lowest point Inside village limits, on the southeast side | 490 ft150 m |
| Town center USGS map point for Swansea | 550 ft165 m |
| Airport (BLV) FAA airport elevation, the highest point of its runways, 6.5 mi east of the village limits | 459 ft140 m |
| Average of all land | 560 ft170 m |
Elevation profile, south to north
3.1 mi south to north through the town center.
Topographic Map
- Location
- Village in St. Clair County, Illinois, United States
- Population
- 14,445 2024 est.
- Land area
- 6.6 sq mi + 0.1 sq mi water
- Density
- 2,204 per sq mi
- Coordinates
- 38.5339° N, 89.9890° W
- Time zone
- Central UTC−6 / −5
- Landform region
- Central Lowland
- Drains to
- Richland Creek → Mississippi River → Gulf of America
- Airport
- Scott Afb/Midamerica St Louis (BLV) 459 ft
- ZIP codes 2
- 62223 62226
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Sources: U.S. Census Bureau, USGS, FAA
Nearby Places
Nearby towns by typical elevation
- Fairview Heights580 ft
- Swansea570 ft
- St. Clair Township550 ft
- Shiloh550 ft
- Stookey Township550 ft
- O'Fallon550 ft
- O'Fallon Township540 ft
- Belleville530 ft
- Shiloh Valley Township470 ft
- Rentchler450 ft
- Scott AFB440 ft
Rankings by typical elevation
- Towns in Illinois2,170th highest of 2,872
- Towns in St. Clair County4th highest of 50
Peaks and hills nearest, by height
- Clarks Mound677 ft
- Turkey Hill640 ft
- Winstanley Hill580 ft
- Monks Mound520 ft
- Rattlesnake Mound430 ft
How we measure
- Typical elevation: the population-weighted median: every 2020 Census block inside the village limits, at its USGS 3DEP height, weighted by the people who live there. Half of residents live higher, half lower.
- Lowest, highest, average: USGS 3DEP bare-earth heights on a 1 arc-second (≈100 ft, 30 m) grid, land only, inside the Census village limits (TIGER, Jan 1 2026).
- Pits: the lowest point is the lowest ground outside closed hollows (quarry floors, mine pits, terrain-model artifacts): any hollow under 0.4 sq mi (1 km²), and any hollow under 2 sq mi (5 km²) whose floor is more than 100 ft (30 m) below its rim; and outside patches below sea level of under 0.4 sq mi (1 km²). The single lowest 3DEP cell, 490 ft at 38.5296° N, 89.9774° W, is in such a hollow or patch and is not counted.
- Nearby Places: nearby towns and rankings use each town's typical elevation, so every town is compared like for like. Rankings count every city, town, township and census-designated place, including places inside a town. Peaks and hills: the nearest summits with at least 980 ft (300 m) of prominence within 62 mi (100 km), then federal (GNIS) summits within 16 mi (25 km) when there are fewer than 5; each is the 3DEP top on a ~7 ft (2 m) window, or the NGS published height when a usable survey mark sits within 160 ft (50 m) of it (shown as published).
- Rounding: computed heights are rounded to 10 ft (5 m), or to 1 ft (1 m) under 100 ft; 3DEP is good to about a meter, not a foot. Published figures (FAA airport elevation, NGS survey heights) are shown as their publisher gives them.
- Datum: North American Vertical Datum of 1988 (NAVD 88). NGS plans to replace NAVD 88 with a new datum (NAPGD2022); heights will then shift slightly.
- Sources: USGS 3DEP, GNIS, Watershed Boundary Dataset and physiographic provinces; U.S. Census Bureau (boundaries, 2020 blocks, 2024 population estimates, Gazetteer areas, ZIP code areas); FAA airport data; BTS time zones; NOAA NGS survey heights. All public domain.