Supplement to the

Fidelity^® Arizona Municipal Money Market Fund
A Fund of Fidelity Union Street Trust II

Fidelity Arizona Municipal Income Fund
A Fund of Fidelity Union Street Trust

STATEMENT OF ADDITIONAL INFORMATION

October 30, 2009

The following information replaces similar information found in the "Management Contracts" section beginning on page 49.

Kevin Ramundo is the portfolio manager of Arizona Municipal Income and receives compensation for his services. As of June 30, 2010, portfolio manager compensation generally consists of a fixed base salary determined periodically (typically annually), a bonus, in certain cases, participation in several types of equity-based compensation plans, and, if applicable, relocation plan benefits. A portion of the portfolio manager's compensation may be deferred based on criteria established by FMR or at the election of the portfolio manager.

The portfolio manager's base salary is determined by level of responsibility and tenure at FMR or its affiliates. The primary components of the portfolio manager's bonus are based on (i) the pre-tax investment performance of the portfolio manager's fund(s) and account(s) measured against a benchmark index assigned to each fund or account, and (ii) the investment performance of other FMR municipal bond funds and accounts. The pre-tax investment performance of the portfolio manager's fund(s) and account(s) is weighted according to his tenure on those fund(s) and account(s) and the average asset size of those fund(s) and account(s) over his tenure. Each component is calculated separately over the portfolio manager's tenure on those fund(s) and account(s) over a measurement period that initially is contemporaneous with his tenure, but that eventually encompasses rolling periods of up to three years for the comparison to a benchmark index. A smaller, subjective component of the portfolio manager's bonus is based on the portfolio manager's overall contribution to management of FMR. The portion of the portfolio manager's bonus that is linked to the investment performance of Arizona Municipal Income is based on the pre-tax investment performance of the fund measured against the Barclays Capital Arizona 4+ Year Enhanced Municipal Bond Index. The portfolio manager also is compensated under equity-based compensation plans linked to increases or decreases in the net asset value of the stock of FMR LLC, FMR's parent company. FMR LLC is a diverse financial services company engaged in various activities that include fund management, brokerage, retirement, and employer administrative services. If requested to relocate their primary residence, portfolio managers also may be eligible to receive benefits, such as home sale assistance and payment of certain moving expenses, under relocation plans for most full-time employees of FMR LLC and its affiliates.

The portfolio manager's compensation plan may give rise to potential conflicts of interest. Although investors in the fund may invest through either tax-deferred accounts or taxable accounts, the portfolio manager's compensation is linked to the pre-tax performance of the fund, rather than its after-tax performance. The portfolio manager's base pay tends to increase with additional and more complex responsibilities that include increased assets under management and a portion of the bonus relates to marketing efforts, which together indirectly link compensation to sales. When a portfolio manager takes over a fund or an account, the time period over which performance is measured may be adjusted to provide a transition period in which to assess the portfolio. The management of multiple funds and accounts (including proprietary accounts) may give rise to potential conflicts of interest if the funds and accounts have different objectives, benchmarks, time horizons, and fees as the portfolio manager must allocate his time and investment ideas across multiple funds and accounts. In addition, a fund's trade allocation policies and procedures may give rise to conflicts of interest if the fund's orders do not get fully executed due to being aggregated with those of other accounts managed by FMR or an affiliate. The portfolio manager may execute transactions for another fund or account that may adversely impact the value of securities held by a fund. Securities selected for other funds or accounts may outperform the securities selected for the fund. Portfolio managers may be permitted to invest in the funds they manage, even if a fund is closed to new investors. Trading in personal accounts, which may give rise to potential conflicts of interest, is restricted by a fund's Code of Ethics.

The following table provides information relating to other accounts managed by Mr. Ramundo as of June 30, 2010:

	Registered Investment Companies*	Other Pooled Investment Vehicles	Other Accounts
Number of Accounts Managed	8	none	none
Number of Accounts Managed with Performance-Based Advisory Fees	none	none	none
Assets Managed (in millions)	$ 21,506	none	none
Assets Managed with Performance-Based Advisory Fees (in millions)	none	none	none

* Includes Arizona Municipal Income ($177 (in millions) assets managed).

AZI/SPZB-10-02 August 3, 2010
1.713596.122

As of June 30, 2010, the dollar range of shares of Arizona Municipal Income beneficially owned by Mr. Ramundo was none.

For Arizona Municipal Money Market Fund, effective May 28, 2010, the following information replaces the similar information regarding the fund's non-fundamental investment limitation with respect to illiquid securities in the "Investment Policies and Limitations" section beginning on page 2.

The fund does not currently intend to purchase any security if, as a result, more than 5% of its total assets would be invested in securities that are deemed to be illiquid because they are subject to legal or contractual restrictions on resale or because they cannot be sold or disposed of in the ordinary course of business within seven days at approximately the value ascribed to it by the fund.

For purposes of the fund's illiquid securities limitation discussed above, if through a change in values, net assets, or other circumstances, the fund were in a position where more than 5% of its total assets were invested in illiquid securities, it would consider appropriate steps to protect liquidity.

For Arizona Municipal Money Market Fund, the following information supplements the information in the "Fund Holdings Information" section beginning on page 59.

Beginning on or before October 7, 2010, the fund will provide a full list of holdings as of the last business day of the previous month on the web site. This information will be provided monthly by no later than the fifth business day of each month. The information will be available on the web site for a period of not less than six months.