Infante's Inmate Visitation page requires this address format, using the jail's post office box rather than Thin Blue Line Lane:
Inmate name, arrest number and cell number (each on its own line)
P.O. Box 187
Adel, Iowa 50003-0187
Adel jail staff open and search all incoming mail for contraband such as money, checks, inappropriate photos, matches, lighters, cigarettes, jewelry and chewing gum, and deliver it Monday through Friday. Letters from anyone who was held in the Dallas County Jail during the previous six months are refused.
Money of any kind counts as contraband in an Adel envelope: the sheriff posts it to the inmate's account instead of delivering it, and asks that cash and personal checks never be mailed. Use the routes in the Adel deposit guide.
Letters and cards are allowed for Dallas County inmates, and anything not authorized is placed in property or discarded, per the sheriff's page.
Legal and official mail, from an attorney, judge, the governor, the citizens' aide or a legislator, is opened only in front of the inmate and never read.
Paperback books are fine but hardbacks are not, and parcels from stores are replaced by Access Securepak orders; anything else should be cleared with 515-993-5815.

Is the jail's street address on Thin Blue Line Lane the right one for a letter?
My friend was released from the Adel jail last month; can she write to someone still inside?
Can a hardcover novel be sent to an inmate on Thin Blue Line Lane?
What happens to a money order tucked inside a letter to the Adel jail?
No. Correspondence for Adel inmates goes to P.O. Box 187 with the 50003-0187 ZIP, which the Inmate Visitation page lists as the jail's mailing address.
No. Infante's mail policy bars correspondence from anyone who was locked up in the Dallas County Jail at any point in the prior half year.
No. Only paperback books are allowed, and they become jail property when the inmate leaves.
Adel mailroom staff pull it out as contraband and credit the inmate's account; next time, use JailATM or the facility kiosk.
Infante's Inmate Account page directs families to a CIDNET correspondence account for messages, calls and video: read the county's correspondence account instructions, then register at customer.cidnet.net.