US Bank Directory
Banks in Sinai, SD
1 FDIC-insured bank operates 1 office in Sinai, South Dakota.
Source: FDIC BankFind, data as of September 5, 2026.
Bank branch map: Sinai
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: 1 institution operates 1 location in Sinai, according to the FDIC. 1 of them has coordinates on record and is 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.
1 location 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 Sinai
Sorted by number of local branches. Each branch shows where its hours and phone number come from.
Short answer: Citizens State Bank, of Arlington is the only bank with an office in Sinai. 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 Sinai, 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 First State Bank Of Sinai Branch at 310 Main Ave dates to 1907 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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First State Bank Of Sinai Branch310 Main Ave, 57061
Banking in Sinai: the local picture
Short answer: 1 bank runs 1 branch in Sinai according to the FDIC. A population estimate for this place is not available from the Census Bureau, so branches per resident are not shown.
Citizens State Bank, of Arlington has its main office in Arlington, SD, according to the FDIC.
The bank with the longest record here is Citizens State Bank, of Arlington, operating since 1901 according to the FDIC.
The one location here does not publish 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 Sinai, and where the nearest one is if they do not.
Short answer: No branches in Sinai: Chase (nearest in Sioux Falls, 51 mi), Wells Fargo (nearest in Brookings, 13 mi), Bank of America, PNC Bank, U.S. Bank (nearest in Sioux Falls, 49 mi), Truist, Fifth Third Bank, Huntington, Regions Bank, TD Bank, BMO (nearest in Huron, 59 mi).
| Bank | In Sinai | Nearest branch if none here |
|---|---|---|
| Chase | None | Sioux Falls, 51 miles away |
| Wells Fargo | None | Brookings, 13 miles away |
| Bank of America | None | none in South Dakota |
| PNC Bank | None | none in South Dakota |
| U.S. Bank | None | Sioux Falls, 49 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, 59 miles away |
Branch counts from FDIC BankFind as of September 5, 2026. Distances are straight-line miles from the center of Sinai 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 Sinai residents like anyone else.
Banks near Sinai
Nearby cities with at least two banks, by straight-line distance. Counts from FDIC BankFind.
Short answer: The closest towns with more choice are Arlington (9 miles) and Brookings (14 miles). Watertown, 45 miles away, has the most banks nearby: 9.
| City | Distance | Banks | Branches |
|---|---|---|---|
| Banks in Arlington, SD | 9 mi | 2 | 2 |
| Banks in Brookings, SD | 14 mi | 6 | 9 |
| Banks in Madison, SD | 17 mi | 5 | 5 |
| Banks in Flandreau, SD | 26 mi | 2 | 2 |
| Banks in Castlewood, SD | 33 mi | 2 | 2 |
| Banks in Dell Rapids, SD | 33 mi | 2 | 2 |
| Banks in Hartford, SD | 43 mi | 2 | 2 |
| Banks in Watertown, SD | 45 mi | 9 | 12 |
Bank branch openings and closings in Sinai
FDIC branch records, between September 5, 2025 and September 5, 2026.
Short answer: FDIC branch records show no bank branch openings in Sinai between September 5, 2025 and September 5, 2026. Closings and relocations are not tracked by the sources this page uses yet.
Largest banks in Sinai by total assets
Ranked by each bank's total assets on its FDIC balance sheet, which covers the whole bank, not only its Sinai offices.
Short answer: Citizens State Bank, of Arlington is the largest bank with offices in Sinai, with $153.2 million in total assets on June 30, 2026, No. 3,302 among U.S. banks by total assets. Local deposit shares will follow once the FDIC Summary of Deposits is imported.
| Bank | Total assets | Rank | Offices here | Main office |
|---|---|---|---|---|
| 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 Sinai: FAQ
How many banks are in Sinai, SD?
Sinai has 1 bank with 1 branch, according to FDIC data as of September 5, 2026.
Is there a Citizens State Bank, of Arlington in Sinai, SD?
Yes. FDIC data lists 1 Citizens State Bank, of Arlington branch in Sinai as of September 5, 2026. The address and directions are under Citizens State Bank, of Arlington above.
Is there a Chase in Sinai, SD?
No. FDIC data lists no Chase branch in Sinai as of September 5, 2026. The nearest is in Sioux Falls, about 51 miles away in a straight line.
What is the oldest bank in Sinai?
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 Sinai 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 Sinai?
Nearby cities with more banks include Arlington, Brookings, Madison. Arlington is 9 miles away with 2 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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