Guam
Branch-office deposits reported to the FDIC Summary of Deposits survey by institutions operating in Guam, June 30 of each survey year, 1994–2025. Dollar figures are the survey’s thousands-of-USD unit displayed as $B/$T. Guam is not one of the 50 states; small jurisdictions with few reporting institutions carry structurally high HHIs.
Deposits, 1994–2025
Office-assigned deposits at branches in Guam went from $1.34B in 1994 to $4.21B in 2025, nominal.
Source: FDIC Summary of Deposits FDIC Summary of Deposits, June 30 of each survey year, 1994-2025. State-level aggregate of branch rows. Methodology
Branches and institutions
The branch network in Guam peaked at 40 offices in 1998; the 2025 survey counts 16. The institution count moved from 10 (1994) to 4 (2025).
Source: FDIC Summary of Deposits FDIC Summary of Deposits, June 30 of each survey year, 1994-2025. Methodology
Deposit concentration (HHI)
Statewide institution-share HHI: the sum of squared percent shares of each institution’s in-state deposits, 0–10,000. The shaded bands are the agencies’ 2010 Horizontal Merger Guidelines classification (section 5.3): unconcentrated below 1,500, moderately concentrated 1,500–2,500, highly concentrated above 2,500. The dashed line marks the 2023 Merger Guidelines threshold, under which markets with an HHI above 1,800 are highly concentrated (Guideline 1). Guam’s HHI is 3322 in 2025 (highly concentrated on the 2010 bands), against 1958 in 1994 and a span peak of 3365 in 2024. A statewide HHI is descriptive: merger review defines banking markets locally, not by state.
Source: FDIC Summary of Deposits | DOJ & FTC, Horizontal Merger Guidelines (2010), section 5.3 | DOJ & FTC, Merger Guidelines (2023), Guideline 1 HHI computed from FDIC Summary of Deposits branch rows, June 30 of each survey year, 1994-2025. Methodology
Largest institutions by in-state deposits, 2025
Branch rows grouped by FDIC certificate; names as reported to the survey. Share is of all SOD deposits booked in Guam that year, the same shares the statewide HHI squares and sums.
| # | Institution | Deposits | Share | Branches |
|---|---|---|---|---|
| 1 | First Hawaiian Bank cert 17985 | $1.72B | 40.82% | 3 |
| 2 | Bank of Guam cert 20884 | $1.42B | 33.81% | 7 |
| 3 | Bank of Hawaii cert 18053 | $946.3M | 22.45% | 2 |
| 4 | BankPacific, Ltd cert 30692 | $122.8M | 2.91% | 4 |
Source: FDIC Summary of Deposits FDIC Summary of Deposits, June 30, 2025. Deposits are office-assigned; an institution's internal allocation practices shape where its balances appear. Methodology
County concentration extremes, 2025
Guam has 1 county-level geography in the survey, shown by county-level deposit HHI. A county served by a single institution sits at the 10,000 ceiling by construction; thin county markets are the norm outside metros.
County
| County | HHI | Inst. | Branches |
|---|---|---|---|
| Guam | 3322 | 4 | 16 |
Source: FDIC Summary of Deposits FDIC Summary of Deposits, June 30, 2025. County HHIs use institution shares of summed branch deposits within the county. Methodology
Back to the national overview, or see the methodology for the survey definition, the HHI construction, and the office-assignment caveat.