Decennial Census Improvement Act of 1997

Decennial Census Improvement Act of 1997 - Requires the Bureau of the Census, in conducting the 2000 decennial census, to: (1) attempt to contact every household directly, whether by mail or in person (and allows the use of sampling as a substitute for direct contact in a particular census tract only after direct contact has been made with at least 90 percent of the households in such tract); and (2) seek to make more effective use of State and local government offices and appropriate local groups to reduce the undercount and include in a specified report a description of the measures it intends to pursue to carry out such requirement.

Prohibits taking into account compensation for services performed by an individual appointed by the Secretary of Commerce to a temporary position for purposes relating to the 2000 decennial census (if the position is so designated by the Secretary at the time of such individual's appointment) for purposes of determining either the individual's eligibility for benefits, or the amount of benefits payable to an individual, under any Federal, State, or local program financed with Federal funds.

Modifies Federal law regarding exemptions for reemployed annuitants and former uniformed service members to make such law: (1) applicable to service in any temporary position within the Bureau established for purposes relating to the 2000 decennial census; and (2) inapplicable to any service performed after December 31, 2000.