County outline
Where Shannon County is located
Area breakdown
Land accounts for 100% of Shannon County’s measured area and water for 0%. Its combined area converts to 2,600.3 square kilometers or approximately 642,559 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 1,003.82 | 2,599.882 | 642,444.8 |
| Water | 0.179 | 0.464 | 114.6 |
| Total | 1,003.999 | 2,600.345 | 642,559.4 |
How Shannon County compares
By original Census land area, Shannon County ranks #2 of 115 in Missouri and #676 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 1.696 times the Missouri county-equivalent median of 592 square miles. It accounts for 1.5% of the combined county land area in the state.
See the complete Missouri ranking · What counts as a county equivalent?
Population and density of Shannon County
The Census Bureau estimates that 7,285 people lived in Shannon County on July 1, 2025. That ranks #2,713 of 3,222 county equivalents nationally and #101 of 115 in Missouri. Since the April 1, 2020 estimates base of 7,032, the population has grown by 253 (+3.6%), compared with +1.9% for Missouri as a whole.
With 1,003.8 square miles of land, that is 7.3 people per square mile (2.8 per km²), placing Shannon County #2,752 nationally for density and #114 in Missouri. The median county equivalent has 47 people per square mile; the Missouri median is 31. Put another way, there are about 88 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 7,034 | 7,097 | 7,219 | 7,252 | 7,284 | 7,285 |
| Change | — | +63 | +122 | +33 | +32 | +1 |
U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.
Cities and towns in Shannon County
4 incorporated places lie at least partly in Shannon County. Together they are home to 2,139 people (29.4%); the other 5,146 (70.6%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Winona city, with 987 residents in the county. The county seat, Eminence city, has 532 residents.
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Winona city | 987 | +3.4% | 3.807 |
| Birch Tree city | 561 | +3.1% | 1.381 |
| Eminence cityCounty seat | 532 | +3.1% | 1.885 |
| Summersville cityAlso in 1 other county | 59 | +3.5% | 1.109 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Shannon County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
Shannon County is not part of any metropolitan or micropolitan statistical area in the Office of Management and Budget’s July 2023 delineation; 1,306 other county equivalents are also outside one. These areas are built around an urban core of at least 10,000 people plus the counties tied to it by commuting, so counties outside them are generally rural.
ZIP codes
9 ZIP Code Tabulation Areas have land in Shannon County; 4 of them have most of their land inside the county, and the others mainly cover neighboring areas.
636296363865438654666547965548655606557165588
ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.
Counties bordering Shannon County
Shannon County shares a land border with 6 county equivalents. It has more land than 5 of them. The largest neighbor is Texas County (1,177.3 mi²) and the smallest is Carter County (507.3 mi²). Together with its neighbors, Shannon County forms a block of 5,966.7 mi² of land, of which it holds 16.8%.
| Bordering county equivalent | Land mi² | Size vs. Shannon | Compare |
|---|---|---|---|
| Texas County | 1,177.3 | 1.2× larger | Compare |
| Howell County | 927.2 | 1.1× smaller | Compare |
| Reynolds County | 808.5 | 1.2× smaller | Compare |
| Oregon County | 789.8 | 1.3× smaller | Compare |
| Dent County | 752.8 | 1.3× smaller | Compare |
| Carter County | 507.3 | 2× smaller | Compare |
How big is Shannon County compared with U.S. states?
Shannon County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1 times as much. Missouri’s county land could hold about 68 areas the size of Shannon County.
Another way to picture it: the same land area would fill a square about 31.7 miles (51 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.
State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.
What stands out about Shannon County?
Shannon County has more land than 2,546 of the other 3,221 county equivalents in the dataset.
A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.
Does including water change its rank?
Using land plus water places Shannon County at #769 nationally by total area, 93 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.
Its water share is 0%, compared with a national county-equivalent median of 1.2% — 1.2 percentage points lower. This describes the statistical geography’s land/water mix, not flood exposure or developable land.
Closest positions in the national land ranking
These entries sit immediately beside Shannon County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #675 | Hale County, Texas | 1,004.7 | Compare |
| #676 | Shannon County, Missouri | 1,003.8 | This county |
| #677 | Washita County, Oklahoma | 1,003.1 | Compare |
Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.
Representative coordinates
The Census internal point is 37.152498, -91.391328. It represents a location inside the geography; it is not necessarily the centroid or the address of a courthouse.
Source and precision
U.S. Census Bureau, 2026 Gazetteer Files, Counties. Original ALAND: 2,599,881,417 m²; AWATER: 464,012 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.
Common questions
How big is Shannon County?
Shannon County, Missouri has 1,003.8 square miles (2,599.9 km²) of land and 0.179 square miles of water, for a total area of 1,004 square miles. It ranks #676 of 3,222 U.S. county equivalents by land area.
Is Shannon County the largest county in Missouri?
No. Shannon County ranks #2 of 115 in Missouri by land area. The largest is Texas County, with 1,177.3 square miles of land.
What counties border Shannon County?
Shannon County shares a land border with Texas County, Reynolds County, Carter County, Dent County, Oregon County, and Howell County.
What is the population of Shannon County?
The Census Bureau estimates Shannon County had 7,285 residents on July 1, 2025, ranking #2,713 of 3,222 county equivalents. That is 7.3 people per square mile of land.
What is the county seat of Shannon County?
The county seat of Shannon County is Eminence.
What cities and towns are in Shannon County?
Shannon County has 4 incorporated places. The most populous are Winona city, Birch Tree city, Eminence city, and Summersville city; 5,146 residents live outside any incorporated place.
Is Shannon County part of a metropolitan area?
No. Shannon County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.
How many ZIP codes are in Shannon County?
9 ZIP Code Tabulation Areas have land in Shannon County, and 4 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Shannon County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 1 times as much land.
How many acres of land are in Shannon County?
The land measurement converts to approximately 642,445 acres. Including water, total area is approximately 642,559 acres. One square mile equals 640 acres.
Why might another source show a different area?
Check whether it reports land or total area, its Census vintage, and its rounding. Our guide explains how to reconcile county area figures.
Can this establish a property boundary?
No. Statistical measurements and generalized maps do not establish property lines. Consult the relevant local surveying or land-records authority.