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Buffalo County, South Dakota eviction risk overview
County brief·Updated June 24, 2026

Buffalo County, South Dakota Eviction Risk: Low

2 incorporated cities and unincorporated areas. The county Eviction Risk Score is held aloft by the city of Fort Thompson (2.7) and a small number of dense urban cores. Rent-control coverage varies by city.

In 2026
Risk score
2.7
LOW

Ranked #1 of 66 SD counties

1k residents · 2 cities · 1 tracts

1976–2026 · pop-weighted from cities

Buffalo County eviction risk score history

Min2.2 Average2.7 Now2.7
10 5 1976 · score 2.7 1977 · score 2.7 1978 · score 2.7 1979 · score 2.7 1980 · score 2.8 1981 · score 2.7 1982 · score 2.7 1983 · score 2.6 1984 · score 2.5 1985 · score 2.4 1986 · score 2.4 1987 · score 2.3 1988 · score 2.7 1989 · score 2.7 1990 · score 2.7 1991 · score 2.8 1992 · score 2.9 1993 · score 2.9 1994 · score 2.9 1995 · score 2.9 1996 · score 3.0 1997 · score 3.0 1998 · score 3.0 1999 · score 3.0 2000 · score 2.9 2001 · score 2.9 2002 · score 2.5 2003 · score 2.5 2004 · score 2.4 2005 · score 2.3 2006 · score 2.2 2007 · score 2.2 2008 · score 2.6 2009 · score 2.8 2010 · score 2.8 2011 · score 2.8 2012 · score 2.7 2013 · score 2.6 2014 · score 2.5 2015 · score 2.5 2016 · score 2.4 2017 · score 2.4 2018 · score 2.3 2019 · score 2.3 2020 · score 3.1 2021 · score 3.4 2022 · score 2.6 2023 · score 2.2 2024 · score 2.6 2025 · score 2.7 2026 · score 2.7

Key metrics

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2026
● LIVE · today ◀ REPLAY · historical

How Buffalo County ranks in South Dakota

Lower number means more extreme, where #1 is the most
Eviction Risk Score
Very High
#1 of 66 SD counties 2.7 / 10
Eviction Risk Score, 100th percentileLowHigh
#1 of 66 counties in South Dakota for landlord eviction risk.
Cost of living
Very Low
#46 of 51 states (statewide) 88.6 index
Cost of living, 10th percentileLowHigh
South Dakota ranks #46 of 51 states on overall cost of living (11.4% cheaper than the U.S. avg).
Housing services cost
Very Low
#43 of 51 states (statewide) 67.6 index
Housing services cost, 16th percentileLowHigh
South Dakota ranks #43 of 51 states on housing services (32.4% cheaper than the U.S. avg).
Income spent on rent
Moderate
#39 of 66 SD counties 22.9% of income
Income spent on rent, 42nd percentileLowHigh
#39 of 66 counties in South Dakota on % of income spent on rent.

Landlord guides for South Dakota

State-specific playbooks
South Dakota Eviction Costs →
Filing fees, attorney fees, lost rent, sheriff lockout
South Dakota Eviction Process →
Step-by-step timeline, notices, statute cites
South Dakota Rent Control →
Statewide caps, local ordinances, just-cause
South Dakota Tenant Screening →
Five-point protocol, legal rules, protected classes
South Dakota Tenant Protections →
Just cause, retaliation, habitability, entry
Cities in Buffalo County
Sorted by Eviction Risk Score · highest first
Map view
CityPopulationRisk% income on rentAverage rentLean
001 Fort Thompson Pop 1,147 · 22.9% income · $563 rent · Dem 1,147 2.7 22.9% $563 Dem
002 Gann Valley Pop 6 · 22.9% income · $563 rent · Dem 6 1.8 22.9% $563 Dem

County heatmap

Geographic distribution
Local landlord context

One county, multiple regulatory regimes.

Buffalo County, South Dakota eviction laws carries an average eviction-risk score of 2.4/10 (Low), but that headline number deserves context before you draw conclusions about operating conditions here. The county spans only 2 incorporated places and a total population of roughly 1,153, and intra-county scores run from 1.5 to 2.4, a narrow band that still masks meaningful differences at the city level. Low-risk scores in South Dakota eviction laws's rural counties can reflect limited eviction court activity rather than inherently easy landlord-tenant dynamics, and Buffalo County's 40.5% poverty rate and 60.8% average renter share are among the most challenging demographic profiles in the state.

Despite the Low label, Buffalo County sits at rank 2 of 66 South Dakota eviction laws counties, meaning only 1 county in the state carries a higher risk score and 64 are less risky or more landlord-friendly. Investors evaluating this market should weigh that positioning carefully: the county's score reflects structural economic stress, not a landlord-favorable operating environment.

The cities inside Buffalo County

Fort Thompson is the county's largest community by far, home to 1,147 of the county's residents, and it posts the highest city-level score in Buffalo County at 2.4/10. That score aligns the city squarely with the county average, and given that it accounts for nearly the entire local population, Fort Thompson effectively sets the tone for the market as a whole. Landlords operating here face a tenant base where rent burden averages 22.9% of income and average rent runs $563 per month.

Gann Valley, the county's only other city, registers a notably lower score of 1.5/10, though its population of 6 makes it effectively a data point rather than an investable market. The spread between Fort Thompson and Gann Valley illustrates the principle that eviction risk is hyper-local: even within a two-city rural county, scores can shift meaningfully depending on local economic conditions.

State-level laws that apply here

All landlords in Buffalo County operate under South Dakota eviction laws state law, specifically SDCL § 43-32 (Lease of Real Property). For non-payment of rent or a lease violation requiring cure, the required notice period is 3 days. Terminating a tenancy at end of term with no stated cause requires 30 days notice. South Dakota eviction laws does not require just cause for eviction, and state law preempts any local rent control, so no Buffalo County municipality may impose rent caps. Understanding the full South Dakota eviction laws eviction process is essential before filing: an uncontested case typically resolves in 21 to 40 days from filing, while a contested matter can run 45 to 100 days.

Cost exposure under South Dakota eviction costs adds up quickly. Court filing fees range from $95 to $180, sheriff lockout fees from $40 to $150, and attorney fees from $500 to $2,500, making the high-end total for a contested, attorney-assisted eviction a meaningful figure relative to the county's average monthly rent of $563. Source-of-income protection is not recognized under South Dakota state law.

With a 40.5% poverty rate and 60.8% renter share, Buffalo County's tenant base is among the most economically stressed in South Dakota eviction laws; review the city grid above to compare Fort Thompson and Gann Valley side by side before committing capital.

Peer counties in South Dakota

Same state, closest by population and Eviction Risk Score
Peer county
Ziebach County eviction risk
2.5
/ 10 · Low
Pop. 638
Peer county
Corson County eviction risk
2.4
/ 10 · Low
Pop. 1.6K
Peer county
Jackson County eviction risk
2.3
/ 10 · Low
Pop. 1.3K
Peer county
Dewey County eviction risk
2.6
/ 10 · Low
Pop. 4.1K

Where eviction risk concentrates in Buffalo County

Top cities + top neighborhoods · click any card for the full breakdown

Top cities by population

Frequently asked

Frequently asked questions about Buffalo County

Q1

What does the 2.7/10 county-average mean?

The 2.7/10 county-average is a population-weighted mean of 2 municipal landlord-risk scores. The internal range is 1.8 to 2.7.
Q2

What share of Buffalo County households rent?

About 60.8% of occupied units in Buffalo County are renter-occupied, per ACS 2023 5-year data.