US Bank Directory
Banks in Sauk City, WI
4 FDIC-insured banks operate 4 offices in Sauk City, Wisconsin, and 1 credit union has 1 office.
Source: FDIC BankFind, data as of September 5, 2026; NCUA call report as of March 31, 2026; hours checked October 10, 2026.
Bank branch map: Sauk City
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: 5 banks and credit unions operate 5 locations in Sauk City, according to the FDIC and the NCUA. 5 of them have coordinates on record and are on the map. 2 publish opening hours.
Branches: FDIC, NCUA. Streets: loading.
5 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 and credit unions in Sauk City
Sorted by number of local branches. Each branch shows where its hours and phone number come from.
Short answer: 4 banks share the most locations in Sauk City, with 1 each. 4 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.
Bank of Prairie du Sac Bank · 1
Bank of Prairie du Sac has 1 branch in Sauk City, 2 across Wisconsin and 2 nationwide. FDIC records list its main office in Prairie Du Sac, WI and show it operating since 1916. With $744.5 million in total assets on June 30, 2026, it ranks No. 1,322 of 4,232 U.S. banks by total assets. The Sauk City Branch at 865 Phillips Blvd dates to 1991 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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Sauk City Branch865 Phillips Blvd, 53583
BMO Bank · 1
BMO has 1 branch in Sauk City, 145 across Wisconsin and 988 nationwide. FDIC records list its main office in Chicago, IL and show it operating since 1947. With $254.97 billion in total assets on June 30, 2026, it ranks No. 16 of 4,232 U.S. banks by total assets. The Sauk Prairie Branch at 615 Water St dates to 1913 in FDIC branch records. It opens on Saturday.
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Sauk Prairie Branch615 Water St, 53583
All hours
Mon to Fri 9 am to 5 pm; Sat 9 am to 12 pm; Sun not published
Hours: BMO branch locator (All The Places), checked Oct 10, 2026
Connexus Credit Union Credit union · 1
Connexus Credit Union has 1 office in Sauk City, 11 across Wisconsin. It is based in Wausau, WI and $4.15 billion in assets on March 31, 2026, according to its NCUA call report. Its published hours do not list Saturday.
Who can join: see the credit union's site.
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Sauk City827 Phillips Blvd, 53583
All hours
Mon to Fri 9 am to 5 pm; Sat to Sun not published
Hours: NCUA, March 31, 2026
Farmers and Merchants Union Bank Bank · 1
Farmers and Merchants Union Bank has 1 branch in Sauk City, 13 across Wisconsin and 13 nationwide. FDIC records list its main office in Columbus, WI and show it operating since 1861. With $872.1 million in total assets on June 30, 2026, it ranks No. 1,174 of 4,232 U.S. banks by total assets. The Wisconsin River Bank Branch at 608 Phillips Blvd dates to 2025 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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Wisconsin River Bank Branch608 Phillips Blvd, 53583
Lake Ridge Bank Bank · 1
Lake Ridge Bank has 1 branch in Sauk City, 20 across Wisconsin and 20 nationwide. FDIC records list its main office in Middleton, WI and show it operating since 1908. With $3.35 billion in total assets on June 30, 2026, it ranks No. 384 of 4,232 U.S. banks by total assets. The Sauk City Branch at 603 Phillips Blvd dates to 2011 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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Sauk City Branch603 Phillips Blvd, 53583
Join a credit union in Sauk City
1 credit union has 1 office here: Connexus Credit Union. Each office is listed above with the phone and the hours it filed with the NCUA (call report as of March 31, 2026). Who can join each one is on its own site; the credit unions in Sauk City page has every office in the state's directory.
Banking in Sauk City: the local picture
Short answer: 4 banks run 4 branches in Sauk City 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 4 banks, 0 have their main office in Sauk City, 3 elsewhere in Wisconsin and 1 out of state, according to the FDIC.
The bank with the longest record here is Farmers and Merchants Union Bank, operating since 1861 according to the FDIC. In FDIC branch records, the longest-running branch is BMO's office at 615 Water St, dating to 1913; the newest is Farmers and Merchants Union Bank's at 608 Phillips Blvd, from 2025.
The only credit union with an office here is Connexus Credit Union.
Of the 2 locations with published hours. 1 opens on Saturday. 3 locations have no published hours in these sources.
Banks open on Saturday in Sauk City
Short answer: 1 of the 2 Sauk City locations with published hours opens on Saturday, run by 1 institution.
- BMO: 1 of 1 branch (615 Water St: Saturday 9 am to 12 pm)
Credit union hours are the text each credit union filed with the NCUA, call report as of March 31, 2026; a day the filing does not mention is shown as not published, never as closed. Bank branches show hours only where the bank publishes them in a source this page uses; 3 of the 5 locations here have no published hours yet. The source and date sit under each office. Banks and credit unions often close on Federal Reserve holidays; call ahead.
Chase, Bank of America and other national banks
Which big national banks have branches in Sauk City, and where the nearest one is if they do not.
Short answer: In Sauk City: BMO (1). No branches in Sauk City: Chase (nearest in Madison, 17 mi), Wells Fargo (nearest in Baraboo, 14 mi), Bank of America, PNC Bank (nearest in Pewaukee, 77 mi), U.S. Bank (nearest in Waunakee, 15 mi), Truist, Fifth Third Bank, Huntington (nearest in Elm Grove, 85 mi), Regions Bank, TD Bank.
| Bank | In Sauk City | Nearest branch if none here |
|---|---|---|
| BMO | 1 branch | here |
| Chase | None | Madison, 17 miles away |
| Wells Fargo | None | Baraboo, 14 miles away |
| Bank of America | None | none in Wisconsin |
| PNC Bank | None | Pewaukee, 77 miles away |
| U.S. Bank | None | Waunakee, 15 miles away |
| Truist | None | none in Wisconsin |
| Fifth Third Bank | None | none in Wisconsin |
| Huntington | None | Elm Grove, 85 miles away |
| Regions Bank | None | none in Wisconsin |
| TD Bank | None | none in Wisconsin |
Branch counts from FDIC BankFind as of September 5, 2026. Distances are straight-line miles from the center of Sauk City to the nearest branch in Wisconsin.
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 Sauk City residents like anyone else.
Banks near Sauk City
Nearby cities with at least two banks, by straight-line distance. Counts from FDIC BankFind.
Short answer: The closest towns with more choice are Lodi (11 miles) and Cross Plains (12 miles). Madison, 21 miles away, has the most banks nearby: 20.
| City | Distance | Banks | Branches |
|---|---|---|---|
| Banks in Lodi, WI | 11 mi | 2 | 2 |
| Banks in Cross Plains, WI | 12 mi | 2 | 4 |
| Banks in Baraboo, WI | 14 mi | 5 | 7 |
| Banks in Waunakee, WI | 15 mi | 6 | 6 |
| Banks in Middleton, WI | 16 mi | 10 | 11 |
| Banks in Mount Horeb, WI | 18 mi | 4 | 4 |
| Banks in Spring Green, WI | 18 mi | 3 | 3 |
| Banks in Madison, WI | 21 mi | 20 | 53 |
Bank branch openings and closings in Sauk City
FDIC branch records, between September 5, 2025 and September 5, 2026.
Short answer: FDIC branch records show no bank branch openings in Sauk City between September 5, 2025 and September 5, 2026. Closings and relocations are not tracked by the sources this page uses yet.
Largest banks in Sauk City by total assets
Ranked by each bank's total assets on its FDIC balance sheet, which covers the whole bank, not only its Sauk City offices.
Short answer: BMO is the largest bank with offices in Sauk City, with $254.97 billion in total assets on June 30, 2026, No. 16 among U.S. banks by total assets. Lake Ridge Bank is second with $3.35 billion. Local deposit shares will follow once the FDIC Summary of Deposits is imported.
| Bank | Total assets | Rank | Offices here | Main office |
|---|---|---|---|---|
| BMO | $254.97 billion | No. 16 | 1 | Chicago, IL |
| Lake Ridge Bank | $3.35 billion | No. 384 | 1 | Middleton, WI |
| Farmers and Merchants Union Bank | $872.1 million | No. 1,174 | 1 | Columbus, WI |
| Bank of Prairie du Sac | $744.5 million | No. 1,322 | 1 | Prairie Du Sac, WI |
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 Sauk City: FAQ
How many banks are in Sauk City, WI?
Sauk City has 4 banks with 4 branches and 1 credit union with 1 office, according to FDIC data as of September 5, 2026 and NCUA data as of March 31, 2026.
Which bank has the most branches in Sauk City?
BMO, with 1. Lake Ridge Bank has 1 and Farmers and Merchants Union Bank has 1.
Is there a BMO in Sauk City, WI?
Yes. FDIC data lists 1 BMO branch in Sauk City as of September 5, 2026. The address and directions are under BMO above.
Is there a Lake Ridge Bank in Sauk City, WI?
Yes. FDIC data lists 1 Lake Ridge Bank branch in Sauk City as of September 5, 2026. The address and directions are under Lake Ridge Bank above.
Is there a Farmers and Merchants Union Bank in Sauk City, WI?
Yes. FDIC data lists 1 Farmers and Merchants Union Bank branch in Sauk City as of September 5, 2026. The address and directions are under Farmers and Merchants Union Bank above.
Is there a Chase in Sauk City, WI?
No. FDIC data lists no Chase branch in Sauk City as of September 5, 2026. The nearest is in Madison, about 17 miles away in a straight line.
Which banks in Sauk City are open on Saturday?
BMO publishes Saturday hours for one or more Sauk City locations. The Saturday section above lists each one with its hours. 3 of the 5 locations here do not publish hours in the sources this page uses; call ahead.
What is the oldest bank in Sauk City?
Farmers and Merchants Union Bank has the longest record among banks with a branch here: the FDIC shows it operating since 1861.
Which credit unions can I join in Sauk City?
Connexus Credit Union has an office in Sauk City. Check each credit union's membership rules before you apply.
Did any bank branches open or close in Sauk City 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 Sauk City?
Nearby cities with more banks include Lodi, Cross Plains, Baraboo. Lodi is 11 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 |
| Credit union offices, phones and hours as filed with the NCUA, total assets | NCUA call report data | Public data (U.S. government) | Quarterly import | Mar 31, 2026 |
| Map coordinates of 1 credit union offices whose NCUA record has none, from the office address | U.S. Census Bureau Geocoder | Public data (U.S. government) | With each NCUA import | Oct 19, 2026 |
| Bank branch hours, phones and branch pages (1 of 4 branches: BMO) | The banks' own branch locators, collected by All The Places | CC0 (All The Places data); each bank's locator is the primary source | Weekly spider run, monthly refresh here | Oct 10, 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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