Jefferson County, IA Elevation & Topographic Map
Elevation
820 ft 250 m760 ft 230 m730 ft 225 m670 ft 205 m610 ft 185 m570 ft 175 m
Contours every 500 ft, bold every 2,500 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.
- County area
- Fades everything outside the official county boundary (US Census).
Elevation Data
Jefferson County averages about 730 ft (225 m) above sea level across all its land. Its ground runs from 570 ft on the east side to 820 ft on the northwest side.
Average elevation
730 ft 225 m
all land inside the county
Highest
820 ft 250 m
on the northwest side
Lowest
570 ft 175 m
on the east side
Jefferson County spans about 250 ft of height, so no single spot tells the whole story. The ruler shows where most of its land lies, and where the other numbers you'll see come from.
| Figure | Elevation |
|---|---|
| Average of all land | 730 ft225 m |
| Highest point Inside the county, on the northwest side | 820 ft250 m |
| Lowest point Inside the county, on the east side | 570 ft175 m |
Elevation profile, west to east
24 mi west to east through Fairfield.
Topographic Map
- Location
- County in Iowa, United States
- Population
- 15,781 2024 est.
- Land area
- 435.5 sq mi + 1.4 sq mi water
- Density
- 36 per sq mi
- Time zone
- Central UTC−6 / −5
- Landform region
- Central Lowland
- Drains to
- Gulf of America
⤓ Download this map
WebP, 1200 × 900. Free to use: credit “ElevationOf.com” with a link to this page.
Sources: U.S. Census Bureau, USGS
Nearby Places
Neighboring counties sharing a border, by average
- Keokuk County770 ft
- Wapello County770 ft
- Jefferson County730 ft
- Washington County730 ft
- Van Buren County710 ft
- Henry County690 ft
Rankings by average elevation
- Counties in Iowa90th highest of 99
- Counties in the United States1,959th highest of 3,151
All 7 towns in Jefferson County by typical elevation
- Packwood810 ft
- Maharishi Vedic City790 ft
- Fairfield770 ft
- Batavia760 ft
- Libertyville760 ft
- Pleasant Plain740 ft
- Lockridge720 ft
How we measure
- Average: every USGS 3DEP bare-earth cell of land inside the Census county boundary (TIGER/Line, Jan 1 2026), weighted equally, on a 1 arc-second (≈100 ft, 30 m) grid. Land means the boundary minus Census area water.
- Highest and lowest: the highest land cell. Lowest: the lowest land cell; coastal ground within 3 ft (1 m) of named tidal water counts as sea level.
- 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, 540 ft at 40.9676° N, 92.0099° W, is in such a hollow or patch and is not counted.
- Nearby Places: neighboring counties and rankings use each one's average elevation, on its own grid, the same figure its page shows. Peaks and hills: the highest summits inside the county with at least 980 ft (300 m) of prominence, then the highest federal (GNIS) summits inside it 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).
- Towns: each town's typical elevation (population-weighted median of its own 2020 blocks at 1 arc-second); a town is listed when any of its 2020 residents live in the county.
- 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 (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 (TIGER boundaries and water, 2020 blocks, 2024 population estimates, county adjacency); NOAA NGS survey heights; BTS time zones. All public domain.