Alliant Credit Union is offering 5.15% APY on its 12 and 24 month certificates. The minimum deposit is $1,000. This is also available as an IRA certificate and a Coverdell ESA Certificate.
Back in September I had posted on this special when the rate was 5.30% APY. The current 5.15% APY is not that great, but it's still competitive for 24 and 12 month terms as you can see from my weekly rate summary.
Membership is open to those who live or work in several Chicagoland communities. National PTA members are also eligible. There's a $25 membership fee for the National PTA, and it appears that it's open to all. You can also be eligible via select employer groups and family. Please see the credit union's members eligibility page for more details. Membership requires a minimum deposit of $5 into the savings account.
Branches are located in Chicago, Des Plaines, and Elk Grove Township, Illinois. There are also branches in Colorad, California and Virginia. The credit union is federally insured by the NCUA (Charter # 67955). It's a large credit union with $4.8 billion in assets and 210,332 members.