Bolthole Index

South Dakota · Off-grid & homestead potential

Day County

44Index Score / 100
#45 of 66 in South Dakota

Day County scores 44/100 on the Bolthole Index, a marginal county profile. Its strengths are manageable long-term carry cost and deep seclusion — about 1,019 people within a 30-minute drive. The trade-offs: thin water margin (23.7″/yr rainfall).

Found land here? Start a Property Hunt →

County locator

Day County in South Dakota

44
County map
Day County highlighted among the South Dakota counties · colored by Index score

How Day County scores

Seclusion73100% ev.
Self-Sufficiency1694% ev.
Admin Boringness5458% ev.
Durability45100% ev.
Property Autonomy67100% ev.
Carry Cost81100% ev.

Evidence strength: 91%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$269kTypical home
1%Property tax
$3,549Land / acre
23.7"Annual rain
2% of yrsSevere drought
5.4 / yr (+4.7)Mid-century 100°F days
20.1 daysMid-century dry spell
1.43" (+8.3%)Mid-century 1-day rain
1.63×Wildfire change factor
100%Forward climate coverage
$1,637Home insurance / yr
4.7% / yrInsurance growth
0.34%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
1,019People within 30 min
198,861People within 2 hr
4,341Radius comparison (15 mi)
5.3People / sq mi
28.7%Federal land
97.3%Land at 15% slope or less
0.7%Septic soil without severe limits
4,169 acWorkable land screen
2.2%Wooded land
42.3°FAvg temp

Scout Day County

Camp here before you commitBook a few nights nearby on Hipcamp →Already own land here?Earn money hosting campers — get $100 when you become a Hipcamp host →

Some links are affiliate or referral links — we may earn a commission, at no cost to you.

Property hunt

Find land. Bring the promising ones back.

Search live inventory elsewhere, then cost and vet each candidate here. No copied listings, account, or paid data feed.

View your full hunt →
ZillowLand & lotsRealtor.comLand listingsLandSearchRural & vacant land

Each button opens a current land search for Day County. Listing sites control their own results and filters.

Analyze a property
Add setup-cost allowances

Use rough quotes or placeholders. Blank fields count as $0.

Working estimate

—land + entered setup costs
Asking $ / acre
—
Setup allowance
—
All-in $ / acre
—

A planning estimate, not a valuation or contractor quote. The USDA benchmark includes farm land and buildings; it is context, not a parcel comp.

Before an offer

Parcel due diligence

0/8 checked

Saved properties and checklist progress stay on this device. Bolthole Index does not receive them.

Building & land-use rules in Day County

What it takes to build here — permits, zoning, and septic — scouted from Day County’s own official sources.

  • Building permitNot published

    Not published on an official source — confirm with the county.

  • County zoningYes

    The county has an adopted zoning ordinance administered by the Day County Planning & Zoning Office, which processes conditional-use permits and variances.

    Day County SD - Planning & Zoning Office ↗
  • Septic permittingSouth Dakota DANR - On-Site Wastewater Program

    South Dakota DANR sets the statewide on-site wastewater rules (ARSD 74:53:01) and certifies the installers required for every new septic system.

    South Dakota DANR - Septic Tank Systems ↗
  • Owner-builderNot published

    Not published on an official source — confirm with the county.

  • Building inspectionsNot published

    Not published on an official source — confirm with the county.

  • Occupancy certificateNot published

    Not published on an official source — confirm with the county.

  • Septic permitNot published

    Not published on an official source — confirm with the county.

  • Septic inspectionNot published

    Not published on an official source — confirm with the county.

  • Off-grid sanitationNot published

    Not published on an official source — confirm with the county.

Always confirm current rules with Day County Planning & Zoning Office before you buy or build. Scouted Jul 2026 from official county sources.

Living off-grid in Day County, South Dakota

Is Day County a good place to live off-grid or homestead?

Day County scores 44/100 on the Bolthole Index, a marginal county profile. Its strengths: manageable long-term carry cost and deep seclusion — about 1,019 people within a 30-minute drive. Watch-outs: thin water margin (23.7″/yr rainfall).

Do you need a building permit in Day County, South Dakota?

Building-permit rules for unincorporated Day County are not published on an official source, and it enforces county zoning. Onsite septic is permitted by South Dakota DANR - On-Site Wastewater Program. Rules change and cities within the county differ — always confirm with the county before you buy or build.

How much does land cost in Day County, South Dakota?

Land in Day County runs about $3,549 per acre, based on the latest county data.

What is the water situation in Day County?

Day County gets about 23.7" of rain a year, with severe drought in roughly 2% of years.

How remote is Day County?

A representative private-land location has about 1,019 people within a 30-minute drive and 198,861 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.

Off-grid gear

Going off-grid in Day County means bringing your own water and power. The kit we’d start with:

WaterCrystal QuestFilter any source — well, rain, or creek — to drinking-clean.PowerBluettiSolar generators and home battery backup for living off the grid.

These are affiliate links — we may earn a commission, at no cost to you.

How Day compares in South Dakota

Compare side-by-side →See all 66 South Dakota counties ranked →