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Codington County, SD Bank Deposit Market Share

Reliabank Dakota holds the largest share of deposits in Codington County, SD, 23.8%, followed by Dacotah Bank (15.5%) and First Premier Bank (11.5%). 10 institutions hold $1.59B at 14 offices as of June 30, 2026, up 4.0% from 2025.

Institutions: 10 Offices: 14 Deposits: $1.59B Survey: FDIC Summary of Deposits, June 30, 2026

Largest share changes since 2025

Gained: American Bank & Trust (1.49 points); First Premier Bank (0.81 points); Reliabank Dakota (0.54 points).

Lost: First Interstate Bank (-2.19 points); Dacotah Bank (-0.86 points); Plains Commerce Bank (-0.09 points).

# Institution Offices Deposits Market share Share change from 2025 Deposit change
1 Reliabank Dakota 2 $377.0M 23.75% +0.54 pts 6.4%
2 Dacotah Bank 1 $245.8M 15.48% -0.86 pts -1.5%
3 First Premier Bank 3 $182.8M 11.51% +0.81 pts 11.9%
4 First Interstate Bank 2 $179.6M 11.31% -2.19 pts -12.9%
5 Plains Commerce Bank 1 $168.8M 10.64% -0.09 pts 3.1%
6 American Bank & Trust 1 $159.4M 10.04% +1.49 pts 22.1%
7 Wells Fargo Bank, N.A. 1 $158.1M 9.96% -0.01 pts 3.9%
8 First Bank & Trust 1 $96.5M 6.08% +0.10 pts 5.8%
9 Minnwest Bank 1 $17.9M 1.12% +0.13 pts 17.2%
10 Cornerstone Bank 1 $1.5M 0.10% +0.10 pts New

About this list

Deposits are those held at each institution's offices in Codington County as of June 30, 2026, from the FDIC Summary of Deposits, whatever state the institution is headquartered in. Market share is the institution's deposits divided by all deposits in the market. Shares are by bank charter, not rolled up to the holding company, and cover FDIC-insured institutions only, so credit unions are not included. Each office is placed in its county and metro area by the FDIC branch directory; the few offices the directory does not list are left out of the market and of every share.

Share change compares the institution's share in 2025 and 2026 in percentage points. Deposit change compares its deposits here in the two years and includes deposits that moved through mergers and branch sales; "New" means it had no offices here a year earlier. Offices that closed during the year are placed by their ZIP code or city.

Wider markets

South Dakota deposits by institution Watertown, SD metro area South Dakota bank directory

Other counties in South Dakota

Lincoln CountyMinnehaha CountyPennington CountyBrookings CountyBrown CountyHughes CountyYankton CountyDavison CountyZiebach CountyLawrence CountyUnion CountyBeadle CountyHutchinson CountyLake CountyMeade CountyCharles Mix CountyRoberts CountyWalworth CountyClay CountyGrant CountyBrule CountyButte CountyHaakon CountyTurner CountyTripp CountyKingsbury CountySpink CountyGregory CountyBon Homme CountyDay CountyHamlin CountyEdmunds CountyAurora CountyPotter CountyMccook CountyHand CountyPerkins CountyDeuel CountyClark CountyMoody County

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