US Bank Directory
Banks in Castlewood, SD
2 FDIC-insured banks operate 2 offices in Castlewood, South Dakota.
Source: FDIC BankFind, data as of September 5, 2026.
Bank branch map: Castlewood
Banks sit at the coordinates in their FDIC record; credit union offices at their NCUA address, located with the U.S. Census Bureau Geocoder. Point at a marker for today's hours, tap it for the address, directions and the bank's site.
Short answer: 2 banks and credit unions operate 2 locations in Castlewood, according to the FDIC. 2 of them have coordinates on record and are on the map. ATMs and opening hours are not in the sources this page uses yet; each marker links to directions.
Branches: FDIC, NCUA. Streets: loading.
2 locations on the map
Tap a cluster to zoom in
Positions are the regulators' own coordinates, or the Census Geocoder's point for the address, and can sit a few hundred feet from the door. Streets, buildings and parks come from OpenStreetMap through OpenFreeMap, with every street named as you zoom in; if that map cannot load, a simpler map drawn from the Census Bureau's TIGER/Line files takes its place. ATMs will follow with the Overture Maps import.
All banks in Castlewood
Sorted by number of local branches. Each branch shows where its hours and phone number come from.
Short answer: First PREMIER Bank and Citizens State Bank, of Arlington have the most locations in Castlewood, with 1 each. 2 banks have a single office in the city. Open any bank to see each address, today's hours where the bank publishes them and the phone number.
Citizens State Bank, of Arlington Bank · 1
Citizens State Bank, of Arlington has 1 branch in Castlewood, 3 across South Dakota and 3 nationwide. FDIC records list its main office in Arlington, SD and show it operating since 1901. With $153.2 million in total assets on June 30, 2026, it ranks No. 3,302 of 4,232 U.S. banks by total assets. The Castlewood Branch at 108 E Main St dates to 1994 in FDIC branch records. It does not publish hours in the sources this page uses; check its site before you go.
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Castlewood Branch108 E Main St, 57223
First PREMIER Bank Bank · 1
First PREMIER Bank has 1 branch in Castlewood, 13 across South Dakota and 13 nationwide. FDIC records list its main office in Sioux Falls, SD and show it operating since 1914. With $3.64 billion in total assets on June 30, 2026, it ranks No. 361 of 4,232 U.S. banks by total assets. The Castlewood Branch at Second And Main dates to 1979 in FDIC branch records. It does not publish hours in the sources this page uses; check its site before you go.
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Castlewood BranchSecond And Main, 57223
Banking in Castlewood: the local picture
Short answer: 2 banks run 2 branches in Castlewood according to the FDIC. A population estimate for this place is not available from the Census Bureau, so branches per resident are not shown.
Of the 2 banks, 0 have their main office in Castlewood, 2 elsewhere in South Dakota, according to the FDIC.
The bank with the longest record here is Citizens State Bank, of Arlington, operating since 1901 according to the FDIC. In FDIC branch records, the longest-running branch is First PREMIER Bank's office at Second And Main, dating to 1979; the newest is Citizens State Bank, of Arlington's at 108 E Main St, from 1994.
None of the 2 locations here publishes hours in the sources this page uses. Each branch links to the bank's own site.
Chase, Bank of America and other national banks
Which big national banks have branches in Castlewood, and where the nearest one is if they do not.
Short answer: No branches in Castlewood: Chase (nearest in Sioux Falls, 83 mi), Wells Fargo (nearest in Watertown, 12 mi), Bank of America, PNC Bank, U.S. Bank (nearest in Sioux Falls, 81 mi), Truist, Fifth Third Bank, Huntington, Regions Bank, TD Bank, BMO (nearest in Huron, 63 mi).
| Bank | In Castlewood | Nearest branch if none here |
|---|---|---|
| Chase | None | Sioux Falls, 83 miles away |
| Wells Fargo | None | Watertown, 12 miles away |
| Bank of America | None | none in South Dakota |
| PNC Bank | None | none in South Dakota |
| U.S. Bank | None | Sioux Falls, 81 miles away |
| Truist | None | none in South Dakota |
| Fifth Third Bank | None | none in South Dakota |
| Huntington | None | none in South Dakota |
| Regions Bank | None | none in South Dakota |
| TD Bank | None | none in South Dakota |
| BMO | None | Huron, 63 miles away |
Branch counts from FDIC BankFind as of September 5, 2026. Distances are straight-line miles from the center of Castlewood to the nearest branch in South Dakota.
What your savings could earn
National benchmarks and the best published offers, from the Banrox Bank Rates tracker. Enter your own balance and rate to compare.
Short answer: At the national average savings rate of 0.38%, $10,000 kept in savings for a year earns about $38. The best published savings rate in the tracker, 3.75% at CIT Bank, earns about $375. The national average 12-month CD pays 1.71%.
| Offer | Bank | APY | Term | Minimum |
|---|---|---|---|---|
| Savings | CIT Bank | 3.75% | none | $5,000 |
| Savings | Barclays | 3.50% | none | $0 |
| Savings | Marcus by Goldman Sachs | 3.40% | none | $0 |
| CD | Synchrony Bank | 4.35% | 60 Months | $0 |
| CD | Marcus by Goldman Sachs | 4.35% | 24 Months | $500 |
| CD | American Express National Bank | 4.25% | 10 Months | $0 |
Rates are the banks' published APYs as tracked on the Banrox Bank Rates page, with the date next to each benchmark; they are not offers from Banrox and can change daily. Interest is before tax. The best offers are mostly online banks and are open to Castlewood residents like anyone else.
Banks near Castlewood
Nearby cities with at least two banks, by straight-line distance. Counts from FDIC BankFind.
Short answer: The closest towns with more choice are Watertown (13 miles) and Arlington (25 miles). Watertown, 13 miles away, has the most banks nearby: 9.
| City | Distance | Banks | Branches |
|---|---|---|---|
| Banks in Watertown, SD | 13 mi | 9 | 12 |
| Banks in Arlington, SD | 25 mi | 2 | 2 |
| Banks in Brookings, SD | 31 mi | 6 | 9 |
| Banks in Milbank, SD | 39 mi | 4 | 4 |
| Banks in Webster, SD | 49 mi | 3 | 3 |
| Banks in Madison, SD | 50 mi | 5 | 5 |
| Banks in Flandreau, SD | 51 mi | 2 | 2 |
| Banks in Huron, SD | 64 mi | 4 | 4 |
Bank branch openings and closings in Castlewood
FDIC branch records, between September 5, 2025 and September 5, 2026.
Short answer: FDIC branch records show no bank branch openings in Castlewood between September 5, 2025 and September 5, 2026. Closings and relocations are not tracked by the sources this page uses yet.
Largest banks in Castlewood by total assets
Ranked by each bank's total assets on its FDIC balance sheet, which covers the whole bank, not only its Castlewood offices.
Short answer: First PREMIER Bank is the largest bank with offices in Castlewood, with $3.64 billion in total assets on June 30, 2026, No. 361 among U.S. banks by total assets. Citizens State Bank, of Arlington is second with $153.2 million. Local deposit shares will follow once the FDIC Summary of Deposits is imported.
| Bank | Total assets | Rank | Offices here | Main office |
|---|---|---|---|---|
| First PREMIER Bank | $3.64 billion | No. 361 | 1 | Sioux Falls, SD |
| Citizens State Bank, of Arlington | $153.2 million | No. 3,302 | 1 | Arlington, SD |
Total assets and ranks from FDIC BankFind as of June 30, 2026. Rank is among active banks that report total assets to the FDIC.
Banks in Castlewood: FAQ
How many banks are in Castlewood, SD?
Castlewood has 2 banks with 2 branches, according to FDIC data as of September 5, 2026.
Which bank has the most branches in Castlewood?
First PREMIER Bank, with 1. Citizens State Bank, of Arlington has 1.
Is there a First PREMIER Bank in Castlewood, SD?
Yes. FDIC data lists 1 First PREMIER Bank branch in Castlewood as of September 5, 2026. The address and directions are under First PREMIER Bank above.
Is there a Citizens State Bank, of Arlington in Castlewood, SD?
Yes. FDIC data lists 1 Citizens State Bank, of Arlington branch in Castlewood as of September 5, 2026. The address and directions are under Citizens State Bank, of Arlington above.
Is there a Chase in Castlewood, SD?
No. FDIC data lists no Chase branch in Castlewood as of September 5, 2026. The nearest is in Sioux Falls, about 83 miles away in a straight line.
What is the oldest bank in Castlewood?
Citizens State Bank, of Arlington has the longest record among banks with a branch here: the FDIC shows it operating since 1901.
Did any bank branches open or close in Castlewood in the past year?
FDIC branch records show no branch openings between September 5, 2025 and September 5, 2026. Closings and relocations are not tracked by the sources this page uses yet.
Where can I find more banks near Castlewood?
Nearby cities with more banks include Watertown, Arlington, Brookings. Watertown is 13 miles away with 9 banks.
How we build this page
Every figure above comes from one of these sources. Nothing is typed by hand, nothing is estimated.
| Data | Source | License | Updated | Data as of |
|---|---|---|---|---|
| FDIC-insured banks: branches, main offices, total assets, dates established | FDIC BankFind Suite API | Public data (U.S. government) | Monthly import | Sep 5, 2026 |
| Savings and CD rates, national averages | Banrox Bank Rates | Banrox, from the banks' own rate pages and FDIC national rates | Weekly | see each rate |
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