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Profitability · Wyoming

US Banks with Highest Net Interest Margin (NIM) in Wyoming

Ranked among banks headquartered in Wyoming. Re-ranked 1-21 within the state from the same national ranking population.

#1 Net Interest Margin (NIM): PLATTE VALLEY BANK — 5.19% . Net Interest Margin (NIM) measures the spread between interest earned on assets and interest paid on liabilities — the core unit economics of a commercial bank.

Ranked: 21 banks with reported data Showing: Top 21 Source: FFIEC call reports (Q1 2026) What is this metric? See the US Banks with … glossary entry Go deeper: What Is Net Interest Margin? A Bank Profitability Guide
# Bank HQ US Banks with … Total Assets
1 Platte Valley Bank Torrington , WY 5.19% $803.6M
2 Jonah Bank of Wyoming Casper , WY 4.83% $568.5M
3 Central Bank and Trust Lander , WY 4.44% $207.0M
4 Bank of Star Valley, the Afton , WY 4.37% $404.5M
5 State Bank Green River , WY 4.32% $112.2M
6 Buffalo Federal Bank Buffalo , WY 4.22% $210.3M
7 Wyoming Community Bank Riverton , WY 4.14% $256.9M
8 First Northern Bank of Wyoming Buffalo , WY 4.09% $946.6M
9 Sundance State Bank Sundance , WY 4.00% $283.6M
10 Bank of Commerce Rawlins , WY 4.00% $213.9M
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11 Pinnacle Bank - Wyoming Cody , WY 3.87% $1.27B
12 Rnb State Bank Rawlins , WY 3.70% $286.9M
13 First Federal Bank & Trust Sheridan , WY 3.38% $632.5M
14 Hilltop National Bank Casper , WY 3.35% $1.14B
15 Big Horn Federal Savings Bank Greybull , WY 3.11% $402.1M
16 Rsnb Bank Rock Springs , WY 3.10% $389.5M
17 Security State Bank Basin , WY 3.06% $430.8M
18 First National Bank of Gillette Gillette , WY 2.97% $626.2M
19 Wyoming Bank & Trust Cheyenne , WY 2.91% $318.3M
20 Converse County Bank, the Douglas , WY 2.24% $1.09B
21 Tanager Bank Jackson , WY 1.31% $216.9M

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All data sourced from the most recent FFIEC call report filings, refreshed each quarter as new filings are processed. This leaderboard excludes banks with total assets under $100,000K to filter out anomalous micro-bank ratios. See /data-updates/ for the current data freshness window.

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