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Carroll County, Mississippi

A shallow water table limits basements on 52% of Carroll County's mapped land, a higher share than 68% of US counties. Shrink-swell clay limits houses without basements on 3%.

100% of the county is in drought on the October 13, 2026 Drought Monitor map. FEMA's flood data list 5 flood losses here since 2016. 41% of homes were built before 1980, against 50% nationally; the median home dates from 1985.

Data as of October 13, 2026 · sources

3%

expansive clay: shrink-swell limits slab homes

52%

high water table: limits basements

100%

in drought, October 13, 2026

41%

of homes built before 1980

Soil under Carroll County

Expansive clay (limits slab homes)2.8%
High water table (limits basements)52.0%
Septic fields very limited85.5%
Clay swell (LEP, by area)2.3%
High-swell land (LEP 6%+)3.4%
Mapped soil406,000 acres
Soil seriesShare hereSeries nationally: high water table
Memphis20%0%
Loring12%99%
Smithdale11%0%
Providence10%n/a
Adler10%n/a
Oaklimeter5%n/a
Montgomery County: 61%Leflore County: 79%Grenada County: 53%Holmes County: 57%Attala County: 57%Tallahatchie County: 69%Webster County: 71%Choctaw County: 53%Carroll County MontgomeryLefloreGrenadaHolmesAttalaTallahatchieWebsterChoctawCarroll
Carroll County (heavy outline) and nearby counties, shaded by high water table share.under 10%10-25%25-40%40-60%60%+

How we count · survey areas MS015 (2025-09-04)

What the numbers mean here

On 52% of Carroll County's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.

Rain over the 12 months to August 2026: 34.17 in, 22.49 in below the 1991-2020 average year of 56.66 in.

USDA rates 86% of the land very limited for septic absorption fields.

Drought

100% of the county is in drought (D1 or worse) on the October 13, 2026 map. Part of the county was in drought in 47 of the last 52 weeks; the most was 100% of its area, in 17 weeks, most recently on the October 13, 2026 map.

October 21, 2025Share of area in drought, weeklyOctober 13, 2026
Category, October 13, 2026Share of county
D0 abnormally dry or worse100%
D1 moderate drought or worse100%
D2 severe or worse99.9%
D3 extreme or worse72.4%
D4 exceptional0.6%

Flood losses since 2016

5 flood losses since 2016, $150,822 paid. The worst year was 2024, with 2.

YearFlood losses
20161
20170
20180
20192
20200
20210
20220
20230
20242
20250
2026 to date0

Rain

Average year, 1991-202056.66 in
12 months to August 202634.17 in (-22.49)
202548.61 in (-8.05)
Wettest year since 18951983: 78.99 in
Driest year since 18951943: 35.07 in
Days with 1 inch or more, normal at GREENWOOD LEFLORE AP (10 mi away)16.8

Homes

Housing units4,964
Median year built1985
Built before 198041%
Built 2000 or later24%
Owner-occupied84%
Median value, owner-occupied$109,600
Single-family detached64%

What repairs cost

Published ranges from cost guides, not quotes. More sources, and where they disagree.

WorkRangeSource
Basement waterproofing, US $3,000 to $10,000 Fixr, February 6, 2026
Sump pump installation, US $800 to $2,000 Fixr, January 31, 2025
Crawl space encapsulation, US $2,000 to $8,000 Fixr, August 29, 2025

Nearby counties

PlaceDistanceExpansive clayHigh water table
Montgomery County, MS 17 mi 1% 61%
Leflore County, MS 23 mi 61% 79%
Grenada County, MS 24 mi 4% 53%
Holmes County, MS 24 mi 14% 57%
Attala County, MS 31 mi 1% 57%
Tallahatchie County, MS 38 mi 35% 69%
Webster County, MS 38 mi 13% 71%
Choctaw County, MS 39 mi 12% 53%

Sources: USDA SSURGO (September 4, 2025) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026) · NOAA (August 2026) · Census ACS 2020-2024. Methods · Data status