Banks in Marengo, IL

Bank branch map: Marengo

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: 3 banks and credit unions operate 4 locations in Marengo, according to the FDIC. 4 of them have coordinates on record and are on the map. 2 publish opening hours.

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 Marengo

Sorted by number of local branches. Each branch shows where its hours and phone number come from.

Short answer: Prairie Community Bank has the most locations in Marengo, 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.

Prairie Community Bank 2 branches · main office Marengo, IL Bank · 2

Prairie Community Bank has 2 branches in Marengo, 5 across Illinois and 5 nationwide. FDIC records list its main office in Marengo, IL and show it operating since 1998. With $187.5 million in total assets on June 30, 2026, it ranks No. 3,082 of 4,232 U.S. banks by total assets. Its main office at 800 W Grant Hwy dates to 1998 in FDIC branch records. It does not publish hours in the sources this page uses; check its site before you go.

• Main Office main office

  800 W Grant Hwy, 60152

  Hours: see the bank's site
  DirectionsWebsite
• Messenger Services

  800 W Grant Hwy, 60152

  Hours: see the bank's site
  DirectionsWebsite

Prairie Community Bank: profile, branches and contacts

BMO BMO Bank National Association · 1 branch · main office Chicago, IL Bank · 1

BMO has 1 branch in Marengo, 179 across Illinois 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 Harris Bk Marengo Branch at 100 W Washington St dates to 1930 in FDIC branch records. It opens on Saturday.

• Harris Bk Marengo Branch

  100 W Washington St, 60152

  (815) 568-7236Today 9 am to 5 pm

  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

  DirectionsBranch page

BMO: profile, branches and contacts

FNBO First National Bank of Omaha · 1 branch · main office Omaha, NE Bank · 1

FNBO has 1 branch in Marengo, 22 across Illinois and 139 nationwide. FDIC records list its main office in Omaha, NE and show it operating since 1857. With $34.20 billion in total assets on June 30, 2026, it ranks No. 64 of 4,232 U.S. banks by total assets. The The First National Bank Of Marengo Branch at 677 E Grant Hwy dates to 1976 in FDIC branch records. It opens on Saturday.

• The First National Bank Of Marengo Branch

  677 E Grant Hwy, 60152

  (815) 568-2753Today 8:30 am to 5 pm

  All hours

  Mon to Fri 8:30 am to 5 pm; Sat 8:30 am to 12 pm; Sun not published

  Hours: FNBO branch locator (All The Places), checked Oct 10, 2026

  DirectionsWebsite

FNBO: profile, branches and contacts

Banking in Marengo: the local picture

Short answer: 3 banks run 4 branches in Marengo 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 Marengo, 1 elsewhere in Illinois and 1 out of state, according to the FDIC.

The bank with the longest record here is FNBO, operating since 1857 according to the FDIC. In FDIC branch records, the longest-running branch is BMO's office at 100 W Washington St, dating to 1930; the newest is Prairie Community Bank's at 800 W Grant Hwy, from 2019.

Of the 2 locations with published hours. 2 open on Saturday. 2 locations have no published hours in these sources.

Banks open on Saturday in Marengo

Short answer: 2 of the 2 Marengo locations with published hours open on Saturday, run by 2 institutions.

• BMO: 1 of 1 branch (100 W Washington St: Saturday 9 am to 12 pm)
• FNBO: 1 of 1 branch (677 E Grant Hwy: Saturday 8:30 am to 12 pm)

Bank branches show hours only where the bank publishes them in a source this page uses; 2 of the 4 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 Marengo, and where the nearest one is if they do not.

Short answer: In Marengo: BMO (1). No branches in Marengo: Chase (nearest in Woodstock, 10 mi), Wells Fargo (nearest in Palatine, 31 mi), Bank of America (nearest in Crystal Lake, 15 mi), PNC Bank (nearest in Belvidere, 12 mi), U.S. Bank (nearest in Crystal Lake, 15 mi), Truist, Fifth Third Bank (nearest in Crystal Lake, 14 mi), Huntington (nearest in Huntley, 12 mi), Regions Bank (nearest in Peoria, 117 mi), TD Bank.

Branch counts from FDIC BankFind as of September 5, 2026. Distances are straight-line miles from the center of Marengo to the nearest branch in Illinois.

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%.

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 Marengo residents like anyone else.

Banks near Marengo

Nearby cities with at least two banks, by straight-line distance. Counts from FDIC BankFind.

Short answer: The closest towns with more choice are Woodstock (10 miles) and Huntley (11 miles). Huntley, 11 miles away, has the most banks nearby: 6.

Bank branch openings and closings in Marengo

FDIC branch records, between September 5, 2025 and September 5, 2026.

Short answer: FDIC branch records show no bank branch openings in Marengo 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 Marengo

Short answer: 1 institution has its main office in Marengo: Prairie Community Bank.

Banks: FDIC BankFind (community-bank flag and assets). Credit unions: NCUA call report.

Largest banks in Marengo by total assets

Ranked by each bank's total assets on its FDIC balance sheet, which covers the whole bank, not only its Marengo offices.

Short answer: BMO is the largest bank with offices in Marengo, with $254.97 billion in total assets on June 30, 2026, No. 16 among U.S. banks by total assets. FNBO is second with $34.20 billion. 1 of the 3 bank is headquartered here. Local deposit shares will follow once the FDIC Summary of Deposits is imported.

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 Marengo: FAQ

How we build this page

Every figure above comes from one of these sources. Nothing is typed by hand, nothing is estimated.