Clayton County routes inmate letters through a Saint Olaf post office box, so the 230th Street address is not used for them:
[Inmate's full legal name]
Clayton County Jail
P.O. Box 10
Saint Olaf, IA 52072
Staff open each item and pull out contraband before handing it over. Every envelope needs the writer's name and return address; ink, greeting-card and photograph rules can be confirmed through 563-245-2422. Letters to Box 10 should carry words and approved photos only; the Clayton County money guide explains the accepted ways to add funds instead of slipping currency or a personal check inside an envelope.
Family letters travel to Box 10 in Saint Olaf, addressed to the prisoner by legal name, with the sender identified in the upper corner.
Attorney letters, money orders, books, newspapers and magazine subscriptions all use the same P.O. Box 10 address, according to the jail's listing.
Call 563-245-2422 to learn whether Clayton County accepts books shipped by Amazon, Barnes & Noble or Books-A-Million before placing an order.

Can inmate letters use the 22680 address?
Do Clayton County jailers open letters before inmates see them?
May relatives slip a personal check into a Saint Olaf letter?
No. Inmate mail goes to Clayton County Jail, P.O. Box 10, Saint Olaf, IA 52072.
Yes; contraband is pulled from every envelope before delivery.
No. Personal checks and currency are unsafe in the mail; follow the deposit steps on the money guide.
Electronic notes for Saint Olaf inmates arrive as Reliance texts once a relative funds an account at Reliance Telephone.