Your bank routing number is a 9-digit code used to identify a financial institution in a transaction. It's based on the location of the bank where your account was opened. It is also referred to as an RTN, a routing transit number or an ABA routing number and can be easily be found printed on the bottom left side of your check. You can also find your routing number in your online banking portal.
The most common types of encountered transactions are ACH and wire transfers. Some banks and financial institutions usually have multiple routing numbers serving different purposes, geographical regions, and branches. The Federal Reserve Banks require routing numbers to process Fedwire funds transfers and the ACH network requires them to process electronic funds transfers (for example direct deposits and bill payments).
9. PNC BANK, NA
11. JPMORGAN CHASE
12. CENTENNIAL BANK
13. RENASANT BANK
14. SYNOVUS BANK
15. FIRST NATIONAL BANK OF PENNSYLVANIA
16. IBERIABANK
17. BANK OZK
18. UNITED BANK
19. US BANK NA
22. REGIONS BANK
25. COMPASS BANK
26. BRANCH BANKING & TRUST COMPANY
27. CITIZENS BANK
28. FIRSTBANK
29. BANNER BANK
30. PEOPLES BANK
31. PINNACLE BANK
32. SOUTH STATE BANK
33. AMERIS BANK
35. FIRST BANK
36. M & T BANK
37. UMPQUA BANK
39. FIRST TENNESSEE BANK NATL ASSN
40. KEY BANK
42. PEOPLE'S UNITED BANK, N.A.
47. NBH BANK
49. PNC BANK, NATIONAL ASSOCIATION
50. HERITAGE BANK
53. EAST WEST BANK
55. TD BANK NA
57. INDEPENDENT BANK
61. BANK OF AMERICA
64. SANTANDER BANK
66. CORNERSTONE BANK
67. EASTERN BANK
69. INTERNATIONAL BANK OF COMMERCE
72. BANK OF THE WEST
73. COMMUNITY BANK
74. FIRST CITIZENS BANK & TRUST COMPANY
75. INTERBANK
76. UMB, NA
77. BANK OF HOPE
78. ARVEST BANK
79. BUSEY BANK
80. CHEMICAL BANK
82. GLACIER BANK
83. KEYBANK NATIONAL ASSOCIATION
84. UNION STATE BANK
86. FIRST NATIONAL BANK OF OMAHA
89. TD BANK, NA
90. UNITED COMMUNITY BANK, INC
91. BANCORP SOUTH
93. BYLINE BANK
94. COMMERCE BANK
97. EQUITY BANK
99. FINANCIAL PARTNERS CREDIT UNION
100. FIRST BANK & TRUST
101. FIRST MERCHANTS BANK
102. SIMMONS BANK
103. USALLIANCE FEDERAL CREDIT UNION
104. WEBSTER BANK
105. BERKSHIRE BANK
106. CENTERSTATE BANK, NATIONAL ASSOCIATI
107. CITIZENS BANK NA
108. CITY NATIONAL BANK
109. COMMERCIAL BANK
110. GREAT SOUTHERN BANK
111. NATIONAL BANK OF COMMERCE
113. CATHAY BANK
114. CITIBANK NA
115. CITIBANK WEST
116. COMMUNITY FIRST CREDIT UNION
117. CREDIT UNION OF SOUTHERN CALIFORNIA
118. FIRST MIDWEST BANK
119. GERMAN AMERICAN BANK
121. HSBC BANK, USA
122. M B FINANCIAL BANK
123. S & T BANK
124. SIMMONS FIRST NATIONAL BANK
126. UNIFY FINANCIAL FEDERAL CREDIT UNION
127. AXOS BANK
128. BANK OF COMMERCE
129. CADENCE BANK, N.A.
130. CAMDEN NATIONAL BANK
131. COMERICA BANK
133. HORIZON BK, AN INDIANA BANK
134. HORIZON CREDIT UNION
135. MIDLAND STATES BANK
136. TBK BANK, SSB
137. WESBANCO BANK INC
138. BANCO POPULAR
139. BANCORPSOUTH
140. BANKPLUS
141. CENTRAL BANK
142. CIBC BANK USA
143. COMMUNITY BANK OF MS
144. FARMERS BANK
145. FIDELITY BANK
146. FIRST FIDELITY BANK
147. FIRST FINANCIAL BANK, N.A.
148. FIRST SAVINGS BANK
149. OLD NATIONAL BANK
150. PIONEER BANK, SSB
Routing numbers are mainly used for financial transactions and here are some of the most common situations when you need to use one:
Not all routing numbers are the same. Banks use different numbers for different types of transactions. The routing number on a paper check might not always be the same number you'll need for an ACH transfer or direct debit.
If you’re unsure which routing number is required for a particular transaction, you should get in touch with your bank otherwise you may be risking delays in processing your transfer.
The ABA Check Routing Number displayed below exists on any check issued by a US bank.

The numbers that make up a routing number can be broken up in 3 parts, each having a distinct meaning.
Here are several ways available to you to find your ABA routing number:
For your bank to process the payment quickly and securely, you should always check routing numbers with your bank or your recipient.
If you're planning to send or receive money through your bank, you will likely come across unfamiliar terms such as routing number (ABA), SWIFT / BIC code, IBAN, and sort code. What exactly are these acronyms, and what are they used for? Well, all of them seemingly do much of the same thing which is to help banks identify where your money needs to go when being transferred, but each is required in specific situations because different countries and banks have different processes and requirements.
Routing numbers are 9-digit codes used in the US to identify banks when processing domestic ACH payments or wire transfers. These are not required when making payments outside the United States.
SWIFT / BIC codes are 8 or 11-digit codes that uniquely identify banks and financial institutions worldwide. Unlike routing numbers, these codes are used for international payments.
IBANs are international bank account numbers that identify the country, financial institution, and individual bank accounts. They're mainly issued by banks in the Eurozone, but other countries are starting to adopt them as well.
Sort Codes are 6-digit numbers used for domestic transfers in the United Kingdom which identify the bank and the branch where a bank account is held.
Note: This website provides a quick and easy way to search & find routing numbers for banks and other financial institutions in the United States. If you're not sure which routing number to use contact your bank directly. You can call your bank using the phone number listed on your debit/credit card or send a message through your online banking system. Using the wrong routing number can lead to delays in processing the transfer.
For professional services and up-to-date financial institution data and ABA routing information of U.S. banks see Accuity and Federal Reserve Bank Services.