Sully County, South Dakota Eviction Risk: Very Low

Sully County, South Dakota eviction laws carries a county-wide average eviction-risk score of 1.4/10, placing it firmly in the Low risk tier. Spread across 3 cities and a total population of just 1,124 residents, the county presents operating conditions that are generally favorable to landlords: low regulatory friction, no local rent control, and a poverty rate of only 6.6%. At rank 34 of 66 South Dakota counties, Sully County sits in the middle of the state, with 33 counties carrying more risk and 32 carrying less.

The intra-county score range runs from 1/10 to 1.6/10, a narrow band that signals consistent low-risk conditions rather than pockets of concentrated stress. With an average rent of $939 and a rent-burden rate of 26.6%, tenants here are not under the financial strain seen in higher-risk markets, which translates to lower eviction pressure for landlords. The renter share of 21.1% of households is modest, meaning the rental market is relatively small and tight-knit.

The cities inside Sully County

Onida leads the county in both population and risk score. As the county seat with 644 residents, it scores 1.6/10, the highest in Sully County. That figure still represents a very low absolute risk level, but landlords targeting Onida should recognize it carries slightly more tenant-side pressure than the rest of the county. Agar, a small community of 81 residents, comes in close behind at 1.5/10.

Oahe Acres, with 399 residents, scores the county's lowest at 1/10, making it the most landlord-favorable location in Sully County. Even within a low-risk county, that spread matters: a landlord buying in Oahe Acres is operating in a meaningfully calmer environment than one in Onida. Risk is always hyper-local, and investors comparing individual cities will find real differences even inside a small, rural county like this one.

State-level laws that apply here

South Dakota state law governs every tenancy in Sully County under SDCL § 43-32 (Lease of Real Property). Nonpayment-of-rent and lease-violation notices require only 3 days, while a no-cause end-of-term notice requires 30 days. An uncontested eviction typically resolves in 21 to 40 days; a contested case can run 45 to 100 days. Understanding the full South Dakota eviction process is essential before any filing. Total out-of-pocket costs can range from a low of roughly $635 (court filing $95, sheriff $40, attorney $500) to a high of roughly $2,830 (court filing $180, sheriff $150, attorney $2,500), making a full review of South Dakota eviction costs a useful step before pursuing a case.

South Dakota has no just-cause eviction requirement, no rent cap, and state law preempts any local rent-control ordinance, so landlords in Sully County face a clean, landlord-neutral legal framework. Source-of-income is not a protected class under state fair-housing rules, and the state fair-housing agency is the South Dakota Division of Human Rights.

With a poverty rate of 6.6% and only about 21.1% of households renting, Sully County's tenant pool is small and relatively stable; the city grid above breaks down how Onida, Oahe Acres, and Agar each contribute to that county-wide picture.