X0404 N-CEN LIVE 0000917286 XXXXXXXX 811-07139 true false false N-1A true Fidelity Hereford Street Trust 811-07139 0000917286 549300KQI5JTFSYJTM18 245 Summer Street Boston 02210 US-MA US 1-800-FIDELITY Fidelity Service Company 245 Summer Street BOST 02210 1-800-FIDELITY Books and Records of the Fund as required to be maintained by the Investment Company Act N N N-1A 5 Y ELIZABETH S ACTON N/A N JENNIFER TOOLIN MCAULIFFE N/A Y JOHN ENGLER N/A N MARK A MURRAY N/A N ROBERT F GARTLAND 001367184 N ANN E DUNWOODY N/A N ABIGAIL JOHNSON 004340399 Y MICHAEL E KENNEALLY 004140099 N ARTHUR E JOHNSON N/A N CHRISTOPHER GOUVEIA 007690152 ONE SPARTAN WAY MERRIMACK 03054 XXXXXX Y N N N N N Fidelity Distributors Company LLC 8-35097 000017507 N/A Y N PricewaterhouseCoopers LLP 238 5493002GVO7EO8RNNS37 Deloitte & Touche LLP 34 N/A N N N N N N N Fidelity Government Money Market Fund S000007051 549300VZUKS6UD4H4866 N 7 0 0 Money Market Fund N N N N N/A 0.00000000 0.00000000 Rule 32a-4 (17 CFR 270.32a-4) Rule 17a-7 (17 CFR 270.17a-7) Rule 17e-1 (17 CFR 270.17e-1) Y Y N N Fidelity Management & Research Company LLC 801-7884 000108281 5493001Z012YSB2A0K51 N FMR Investment Management (UK) Limited 801-28773 000108273 549300DJ0TLKPO1HIS84 Y GB N Fidelity Management & Research (Hong Kong) Limited 801-69507 000148045 549300VLVPR60I312N68 Y HK N Fidelity Management & Research (Japan) Limited 801-69571 000148239 549300FF7J6H5TZ22Y05 Y JP N Fidelity Investments Institutional Operations Company LLC 084-01839 549300XVSM8LN3LQOK63 Y N N INTERCONTINENTAL EXCHANGE INC 5493000F4ZO33MV32P92 N PRICINGDIRECT INC 549300WIC0TOJ7N7GD54 N N The Bank of New York Mellon HPFHU0OQ28E4N0NFVK49 N Y Bank - 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