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**Exhibit        11**

**FRONTIER        FINANCIAL CORPORATION**

**COMPUTATION        OF BASIC AND DILUTED EARNINGS PER SHARE**

|                                                                                                                          |   | 2006   |   | 2005   |   | 2004   |   |
|-------------------------------------------------------------------------------------------------------------------------------|--------|--------|--------|--------|--------|--------|--------|
|                                                                                                                          |   |   |   |   |   |   |   |
| Net                  Income (in thousands)                                                                                    |   | $      | 68,910 |   | $      | 51,584 |   | $ | 43,045 |   |
|                                                                                                                          |   |   |   |   |   |   |   |   |   |   |
| Computation                  of average shares outstanding:                                                                   |   |   |   |   |   |   |   |   |   |   |
|                                                                                                                          |   |   |   |   |   |   |   |   |   |   |
| Shares                  outstanding at beginning of year                                                                      |   |   | 42,657 |   |   | 42,177 |   |   | 41,738 |   |
|                                                                                                                          |   |   |   |   |   |   |   |   |   |   |
| Average                    shares issued pursuant to merger                                                                   |   |   | 1,514  |   |   | -      |   |   | - |   |
|                                                                                                                          |   |   |   |   |   |   |   |   |   |   |
| Shares                  issued or repurchased during the year times average time outstanding                  during the year |   |   | 839    |   |   | 305    |   |   | 189 |   |
| Basic                  average shares outstanding                                                                             |   |   | 45,010 |   |   | 42,482 |   |   | 41,927 |   |
| Average                  number of dilutive shares assumed to be outstanding (1)                                              |   |   | 475    |   |   | 261    |   |   | 279 |   |
|                                                                                                                          |   |   |   |   |   |   |   |   |   |   |
| Average                  dilutive shares outstanding                                                                          |   |   | 45,485 |   |   | 42,743 |   |   | 42,206 |   |
|                                                                                                                          |   |   |   |   |   |   |   |   |   |   |
| Basic                  earnings per share                                                                                     |   | $      | 1.53   |   | $      | 1.21   |   | $ | 1.03 |   |
|                                                                                                                          |   |   |   |   |   |   |   |   |   |   |
| Diluted                  earnings per share                                                                                   |   | $      | 1.52   |   | $      | 1.21   |   | $ | 1.02 |   |

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