US Bank Directory
Banks in Lake Mills, WI
3 FDIC-insured banks operate 4 offices in Lake Mills, 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.
Bank branch map: Lake Mills
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: 4 banks and credit unions operate 5 locations in Lake Mills, according to the FDIC and the NCUA. 5 of them have coordinates on record and are on the map. 1 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 Lake Mills
Sorted by number of local branches. Each branch shows where its hours and phone number come from.
Short answer: Bank Cmg has the most locations in Lake Mills, with 2. The other 2 each 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 Cmg Bank · 2
Bank Cmg has 2 branches in Lake Mills, 10 across Wisconsin and 10 nationwide. FDIC records list its main office in Madison, WI and show it operating since 1883. With $1.06 billion in total assets on June 30, 2026, it ranks No. 1,000 of 4,232 U.S. banks by total assets. In FDIC branch records, its longest-running Lake Mills location is the Lake Mills Branch at 300 E Lake St, dating to 1920; the newest, at 365 W Tyranena Park Rd, to 2024. It does not publish hours in the sources this page uses; check its site before you go.
-
Lake Mills Branch300 E Lake St, 53551
-
Lake Mills Branch365 W Tyranena Park Rd, 53551
Bank of Lake Mills Bank · 1
Bank of Lake Mills has 1 branch in Lake Mills, 2 across Wisconsin and 2 nationwide. FDIC records list its main office in Lake Mills, WI and show it operating since 1893. With $533.8 million in total assets on June 30, 2026, it ranks No. 1,717 of 4,232 U.S. banks by total assets. Its main office at 136 E Madison St dates to 1893 in FDIC branch records. It does not publish hours in the sources this page uses; check its site before you go.
-
Main Office main office136 E Madison St, 53551
Farmers & Merchants State Bank Bank · 1
Farmers & Merchants State Bank has 1 branch in Lake Mills, 3 across Wisconsin and 3 nationwide. FDIC records list its main office in Waterloo, WI and show it operating since 1897. With $245.6 million in total assets on June 30, 2026, it ranks No. 2,752 of 4,232 U.S. banks by total assets. The Lake Mills Branch at 550 W Tyranena Park Rd dates to 2024 in FDIC branch records. It does not publish hours in the sources this page uses; check its site before you go.
-
Lake Mills Branch550 W Tyranena Park Rd, 53551
Summit Credit Union Credit union · 1
Summit Credit Union has 1 office in Lake Mills, 57 across Wisconsin. It is based in Madison, WI and $8.30 billion in assets on March 31, 2026, according to its NCUA call report. It opens on Saturday.
Who can join: see the credit union's site.
-
Lake Mills141 E Tyranena Park Rd, 53551
All hours
Mon to Fri 7:30 am to 5:30 pm; Sat 8:30 am to 1 pm; Sun not published
Hours: NCUA, March 31, 2026
Join a credit union in Lake Mills
1 credit union has 1 office here: Summit 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 Lake Mills page has every office in the state's directory.
Banking in Lake Mills: the local picture
Short answer: 3 banks run 4 branches in Lake Mills 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 3 banks, 1 has its main office in Lake Mills, 2 elsewhere in Wisconsin, according to the FDIC.
The bank with the longest record here is Bank Cmg, operating since 1883 according to the FDIC. In FDIC branch records, the longest-running branch is Bank of Lake Mills's office at 136 E Madison St, dating to 1893; the newest is Bank Cmg's at 365 W Tyranena Park Rd, from 2024.
The only credit union with an office here is Summit Credit Union.
Of the 1 location with published hours. 1 opens on Saturday. 4 locations have no published hours in these sources.
Credit unions open on Saturday in Lake Mills
Short answer: 1 of the 1 Lake Mills location with published hours opens on Saturday, run by 1 institution.
- Summit Credit Union: 1 of 1 office (141 E Tyranena Park Rd: Saturday 8:30 am to 1 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; 4 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 Lake Mills, and where the nearest one is if they do not.
Short answer: No branches in Lake Mills: Chase (nearest in Sun Prairie, 19 mi), Wells Fargo (nearest in Stoughton, 20 mi), Bank of America, PNC Bank (nearest in Pewaukee, 35 mi), U.S. Bank (nearest in Sun Prairie, 19 mi), Truist, Fifth Third Bank, Huntington (nearest in Elm Grove, 43 mi), Regions Bank, TD Bank, BMO (nearest in Watertown, 12 mi).
| Bank | In Lake Mills | Nearest branch if none here |
|---|---|---|
| Chase | None | Sun Prairie, 19 miles away |
| Wells Fargo | None | Stoughton, 20 miles away |
| Bank of America | None | none in Wisconsin |
| PNC Bank | None | Pewaukee, 35 miles away |
| U.S. Bank | None | Sun Prairie, 19 miles away |
| Truist | None | none in Wisconsin |
| Fifth Third Bank | None | none in Wisconsin |
| Huntington | None | Elm Grove, 43 miles away |
| Regions Bank | None | none in Wisconsin |
| TD Bank | None | none in Wisconsin |
| BMO | None | Watertown, 12 miles away |
Branch counts from FDIC BankFind as of September 5, 2026. Distances are straight-line miles from the center of Lake Mills 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 Lake Mills residents like anyone else.
Banks near Lake Mills
Nearby cities with at least two banks, by straight-line distance. Counts from FDIC BankFind.
Short answer: The closest towns with more choice are Johnson Creek (7 miles) and Cambridge (8 miles). Sun Prairie, 18 miles away, has the most banks nearby: 10.
| City | Distance | Banks | Branches |
|---|---|---|---|
| Banks in Johnson Creek, WI | 7 mi | 2 | 2 |
| Banks in Cambridge, WI | 8 mi | 2 | 2 |
| Banks in Jefferson, WI | 8 mi | 3 | 3 |
| Banks in Fort Atkinson, WI | 12 mi | 3 | 4 |
| Banks in Watertown, WI | 12 mi | 6 | 7 |
| Banks in Cottage Grove, WI | 15 mi | 4 | 4 |
| Banks in Columbus, WI | 18 mi | 2 | 3 |
| Banks in Sun Prairie, WI | 18 mi | 10 | 12 |
Bank branch openings and closings in Lake Mills
FDIC branch records, between September 5, 2025 and September 5, 2026.
Short answer: FDIC branch records show no bank branch openings in Lake Mills between September 5, 2025 and September 5, 2026. Closings and relocations are not tracked by the sources this page uses yet.
Banks and credit unions based in Lake Mills
Short answer: 1 institution has its main office in Lake Mills: Bank of Lake Mills.
| Institution | Type | Total assets, June 30, 2026 | Offices here |
|---|---|---|---|
| Bank of Lake Mills | Bank | $533.8 million | 1 |
Banks: FDIC BankFind (community-bank flag and assets). Credit unions: NCUA call report.
Largest banks in Lake Mills by total assets
Ranked by each bank's total assets on its FDIC balance sheet, which covers the whole bank, not only its Lake Mills offices.
Short answer: Bank Cmg is the largest bank with offices in Lake Mills, with $1.06 billion in total assets on June 30, 2026, No. 1,000 among U.S. banks by total assets. Bank of Lake Mills is second with $533.8 million. 1 of the 3 bank is headquartered here. Local deposit shares will follow once the FDIC Summary of Deposits is imported.
| Bank | Total assets | Rank | Offices here | Main office |
|---|---|---|---|---|
| Bank Cmg | $1.06 billion | No. 1,000 | 2 | Madison, WI |
| Bank of Lake Mills | $533.8 million | No. 1,717 | 1 | Lake Mills, WI |
| Farmers & Merchants State Bank | $245.6 million | No. 2,752 | 1 | Waterloo, 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 Lake Mills: FAQ
How many banks are in Lake Mills, WI?
Lake Mills has 3 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 Lake Mills?
Bank Cmg, with 2. Bank of Lake Mills has 1 and Farmers & Merchants State Bank has 1.
Is there a Bank Cmg in Lake Mills, WI?
Yes. FDIC data lists 2 Bank Cmg branches in Lake Mills as of September 5, 2026. Its branches are listed under Bank Cmg above, with the address and directions for each.
Is there a Farmers & Merchants State Bank in Lake Mills, WI?
Yes. FDIC data lists 1 Farmers & Merchants State Bank branch in Lake Mills as of September 5, 2026. The address and directions are under Farmers & Merchants State Bank above.
Is there a Chase in Lake Mills, WI?
No. FDIC data lists no Chase branch in Lake Mills as of September 5, 2026. The nearest is in Sun Prairie, about 19 miles away in a straight line.
Which banks in Lake Mills are open on Saturday?
Summit Credit Union publishes Saturday hours for one or more Lake Mills locations. The Saturday section above lists each one with its hours. 4 of the 5 locations here do not publish hours in the sources this page uses; call ahead.
Which banks are headquartered in Lake Mills?
Bank of Lake Mills has its main office in Lake Mills, according to the FDIC.
What is the oldest bank in Lake Mills?
Bank Cmg has the longest record among banks with a branch here: the FDIC shows it operating since 1883.
Which credit unions can I join in Lake Mills?
Summit Credit Union has an office in Lake Mills. Check each credit union's membership rules before you apply.
Did any bank branches open or close in Lake Mills 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 Lake Mills?
Nearby cities with more banks include Johnson Creek, Cambridge, Jefferson. Johnson Creek is 7 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 |
| Savings and CD rates, national averages | Banrox Bank Rates | Banrox, from the banks' own rate pages and FDIC national rates | Weekly | see each rate |
See your odds before you apply
Banrox shows how likely a card or loan is for your profile, from your own data, without a hard pull. Platform live; card in early access; no card issued.
Check your odds