US Bank Directory
Banks in Grinnell, IA
5 FDIC-insured banks operate 5 offices in Grinnell, Iowa, and 2 credit unions have 2 offices.
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: Grinnell
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: 7 banks and credit unions operate 7 locations in Grinnell, according to the FDIC and the NCUA. 7 of them have coordinates on record and are on the map. 4 publish opening hours.
Branches: FDIC, NCUA. Streets: loading.
7 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 Grinnell
Sorted by number of local branches. Each branch shows where its hours and phone number come from.
Short answer: 5 banks share the most locations in Grinnell, with 1 each. 5 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.
Community 1st Credit Union Credit union · 1
Community 1st Credit Union has 1 office in Grinnell, 24 across Iowa. It is based in Ottumwa, IA and $1.10 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.
-
Grinnell205 West St, 50112
All hours
Mon to Fri 8:30 am to 5 pm; Sat to Sun not published
Hours: NCUA, March 31, 2026
First Interstate Bank Bank · 1
First Interstate Bank has 1 branch in Grinnell, 45 across Iowa and 274 nationwide. FDIC records list its main office in Billings, MT and show it operating since 1916. With $25.79 billion in total assets on June 30, 2026, it ranks No. 83 of 4,232 U.S. banks by total assets. The Grinnell Branch at 1030 Broad St dates to 1913 in FDIC branch records. Its published hours do not list Saturday.
-
Grinnell Branch1030 Broad St, 50112
All hours
Mon closed; Tue to Fri 9 am to 5 pm; Sat to Sun closed
Hours: First Interstate Bank branch locator (All The Places), checked Oct 10, 2026
First State Bank Bank · 1
First State Bank has 1 branch in Grinnell, 7 across Iowa and 7 nationwide. FDIC records list its main office in Lynnville, IA and show it operating since 1912. With $384.2 million in total assets on June 30, 2026, it ranks No. 2,139 of 4,232 U.S. banks by total assets. The Grinnell Branch at 702 2nd Ave dates to 2005 in FDIC branch records. It does not publish hours in the sources this page uses; check its site before you go.
-
Grinnell Branch702 2nd Ave, 50112
Greenstate Credit Union Credit union · 1
Greenstate Credit Union has 1 office in Grinnell, 27 across Iowa. It is based in North Liberty, IA and $11.19 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.
-
Grinnell705 6Th Ave, 50112
All hours
Mon to Fri 9 am to 5 pm; Sat 9 am to 12 pm; Sun not published
Hours: NCUA, March 31, 2026
Grinnell State Bank Bank · 1
Grinnell State Bank has 1 branch in Grinnell, 4 across Iowa and 4 nationwide. FDIC records list its main office in Grinnell, IA and show it operating since 1925. With $498.6 million in total assets on June 30, 2026, it ranks No. 1,800 of 4,232 U.S. banks by total assets. Its main office at 814 4th Ave dates to 1925 in FDIC branch records. It does not publish hours in the sources this page uses; check its site before you go.
-
Main Office main office814 4th Ave, 50112
Lincoln Savings Bank Bank · 1
Lincoln Savings Bank has 1 branch in Grinnell, 16 across Iowa and 16 nationwide. FDIC records list its main office in Reinbeck, IA and show it operating since 1902. With $1.71 billion in total assets on June 30, 2026, it ranks No. 664 of 4,232 U.S. banks by total assets. The Grinnell Branch at 1025 Main St dates to 2008 in FDIC branch records. It does not publish hours in the sources this page uses; check its site before you go.
-
Grinnell Branch1025 Main St, 50112
Wells Fargo Bank · 1
Wells Fargo has 1 branch in Grinnell, 39 across Iowa and 4,161 nationwide. FDIC records list its main office in Sioux Falls, SD and show it operating since 1870. With $1.91 trillion in total assets on June 30, 2026, it ranks No. 4 of 4,232 U.S. banks by total assets. The Grinnell Branch at 833 4th Ave dates to 1930 in FDIC branch records. Its published hours do not list Saturday.
-
Grinnell Branch833 4th Ave, 50112
All hours
Mon to Fri 9 am to 5 pm; Sat to Sun not published
Hours: Wells Fargo branch locator (All The Places), checked Oct 10, 2026
Join a credit union in Grinnell
2 credit unions have 2 offices here: Greenstate Credit Union and Community 1st 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 Grinnell page has every office in the state's directory.
Banking in Grinnell: the local picture
Short answer: 5 banks run 5 branches in Grinnell 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 5 banks, 1 has its main office in Grinnell, 2 elsewhere in Iowa and 2 out of state, according to the FDIC.
The bank with the longest record here is Wells Fargo, operating since 1870 according to the FDIC. In FDIC branch records, the longest-running branch is First Interstate Bank's office at 1030 Broad St, dating to 1913; the newest is Lincoln Savings Bank's at 1025 Main St, from 2008.
2 credit unions have 2 offices in Grinnell, according to the NCUA. Who can join each one is on the credit unions page.
Of the 4 locations with published hours. 1 opens on Saturday. 3 locations have no published hours in these sources.
Credit unions open on Saturday in Grinnell
Short answer: 1 of the 4 Grinnell locations with published hours opens on Saturday, run by 1 institution.
- Greenstate Credit Union: 1 of 1 office (705 6Th Ave: 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 7 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 Grinnell, and where the nearest one is if they do not.
Short answer: In Grinnell: Wells Fargo (1). No branches in Grinnell: Chase (nearest in Altoona, 41 mi), Bank of America (nearest in Des Moines, 48 mi), PNC Bank, U.S. Bank (nearest in Newton, 17 mi), Truist, Fifth Third Bank, Huntington, Regions Bank (nearest in Urbandale, 53 mi), TD Bank, BMO (nearest in Des Moines, 44 mi).
| Bank | In Grinnell | Nearest branch if none here |
|---|---|---|
| Wells Fargo | 1 branch | here |
| Chase | None | Altoona, 41 miles away |
| Bank of America | None | Des Moines, 48 miles away |
| PNC Bank | None | none in Iowa |
| U.S. Bank | None | Newton, 17 miles away |
| Truist | None | none in Iowa |
| Fifth Third Bank | None | none in Iowa |
| Huntington | None | none in Iowa |
| Regions Bank | None | Urbandale, 53 miles away |
| TD Bank | None | none in Iowa |
| BMO | None | Des Moines, 44 miles away |
Branch counts from FDIC BankFind as of September 5, 2026. Distances are straight-line miles from the center of Grinnell to the nearest branch in Iowa.
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 Grinnell residents like anyone else.
Banks near Grinnell
Nearby cities with at least two banks, by straight-line distance. Counts from FDIC BankFind.
Short answer: The closest towns with more choice are Sully (13 miles) and Montezuma (15 miles). Marshalltown, 22 miles away, has the most banks nearby: 9.
| City | Distance | Banks | Branches |
|---|---|---|---|
| Banks in Sully, IA | 13 mi | 2 | 2 |
| Banks in Montezuma, IA | 15 mi | 2 | 2 |
| Banks in Newton, IA | 17 mi | 6 | 6 |
| Banks in Tama, IA | 17 mi | 2 | 2 |
| Banks in Victor, IA | 22 mi | 2 | 2 |
| Banks in Marshalltown, IA | 22 mi | 9 | 12 |
| Banks in Pella, IA | 25 mi | 6 | 8 |
| Banks in Belle Plaine, IA | 25 mi | 2 | 2 |
Bank branch openings and closings in Grinnell
FDIC branch records, between September 5, 2025 and September 5, 2026.
Short answer: FDIC branch records show no bank branch openings in Grinnell 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 Grinnell
Short answer: 1 institution has its main office in Grinnell: Grinnell State Bank.
| Institution | Type | Total assets, June 30, 2026 | Offices here |
|---|---|---|---|
| Grinnell State Bank | Bank | $498.6 million | 1 |
Banks: FDIC BankFind (community-bank flag and assets). Credit unions: NCUA call report.
Largest banks in Grinnell by total assets
Ranked by each bank's total assets on its FDIC balance sheet, which covers the whole bank, not only its Grinnell offices.
Short answer: Wells Fargo is the largest bank with offices in Grinnell, with $1.91 trillion in total assets on June 30, 2026, No. 4 among U.S. banks by total assets. First Interstate Bank is second with $25.79 billion. 1 of the 5 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 |
|---|---|---|---|---|
| Wells Fargo | $1.91 trillion | No. 4 | 1 | Sioux Falls, SD |
| First Interstate Bank | $25.79 billion | No. 83 | 1 | Billings, MT |
| Lincoln Savings Bank | $1.71 billion | No. 664 | 1 | Reinbeck, IA |
| Grinnell State Bank | $498.6 million | No. 1,800 | 1 | Grinnell, IA |
| First State Bank | $384.2 million | No. 2,139 | 1 | Lynnville, IA |
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 Grinnell: FAQ
How many banks are in Grinnell, IA?
Grinnell has 5 banks with 5 branches and 2 credit unions with 2 offices, according to FDIC data as of September 5, 2026 and NCUA data as of March 31, 2026.
Which bank has the most branches in Grinnell?
Wells Fargo, with 1. First Interstate Bank has 1 and Lincoln Savings Bank has 1.
Is there a Wells Fargo in Grinnell, IA?
Yes. FDIC data lists 1 Wells Fargo branch in Grinnell as of September 5, 2026. The address and directions are under Wells Fargo above.
Is there a First Interstate Bank in Grinnell, IA?
Yes. FDIC data lists 1 First Interstate Bank branch in Grinnell as of September 5, 2026. The address and directions are under First Interstate Bank above.
Is there a Lincoln Savings Bank in Grinnell, IA?
Yes. FDIC data lists 1 Lincoln Savings Bank branch in Grinnell as of September 5, 2026. The address and directions are under Lincoln Savings Bank above.
Is there a Chase in Grinnell, IA?
No. FDIC data lists no Chase branch in Grinnell as of September 5, 2026. The nearest is in Altoona, about 41 miles away in a straight line.
Which banks in Grinnell are open on Saturday?
Greenstate Credit Union publishes Saturday hours for one or more Grinnell locations. The Saturday section above lists each one with its hours. 3 of the 7 locations here do not publish hours in the sources this page uses; call ahead.
Which banks are headquartered in Grinnell?
Grinnell State Bank has its main office in Grinnell, according to the FDIC.
What is the oldest bank in Grinnell?
Wells Fargo has the longest record among banks with a branch here: the FDIC shows it operating since 1870.
Which credit unions can I join in Grinnell?
Greenstate Credit Union and Community 1st Credit Union have offices in Grinnell. Check each credit union's membership rules before you apply.
Did any bank branches open or close in Grinnell 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 Grinnell?
Nearby cities with more banks include Sully, Montezuma, Newton. Sully is 13 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 2 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 (2 of 5 branches: First Interstate Bank, Wells Fargo) | 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 |
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