The state of Alabama started keeping track of vital records in 1908 but Walker County public records typically go back to at least 1823. That was the year the county was established.
The public are permitted to acquire copies of vital records, but there are some restrictions on birth and death records (explained in detail below). If you are eligible to get a record, then you just need to fill out the application form and send it to the health department office in Jasper. They are open during regular business hours so you can do your business in person if you wish. When you come to the counter, you usually get your record copies back while you wait. Otherwise, you can mail them in and then can expect your material back between 1 and 2 weeks later.
The forms for Walker County public records can be picked up at the counter, or downloaded from the Alabama Department of Public Health website. You will have to provide all the complete names, dates and locations relevant to the record you are looking for as well as provide your own full name, address and telephone number. Personal ID will have to be shown to the clerk, or included as a photocopy with your mailed in paperwork.
Walker County Birth Records
Privacy restricts are the most strict with Walker County birth records, as it means you can't access too many records for 125 years. For that time, you are only going to be able to make requests for your own birth certificate, or records for your kids, parents, siblings or current legal spouse. Everything else is off-limits. After 125 years, these records are housed at the State Archives, where they are public domain and can be looked up by anyone. Each certified copy you order from the health office will cost $15 USD.
Walker County Death Records
Death records are less often used in identity fraud, so the privacy restriction is only good for 25 years. For that time, you may only make records requests for Walker County death records belonging to immediate family members. When ordering certified copies at the health department, the fee is also $15 USD but once the records become public at 25 years, the documents are easier to access for free. The State Archives or even your local library should be able to help you.
Walker County Marriage Records
Walker County marriage records are open to the public at all times, so you will be able to place an order for a copy regardless of when the record was created or who got married. The state made marriage registration mandatory in 1936 though the county was already keeping records long before that. If the health office doesn't have material going back far enough, try at the Probate courthouse in Jasper.
Walker County Criminal Records
The county doesn't issue these, so if you want Walker County criminal records, you will have to put in an application with the Alabama Criminal Justice Information Center in Montgomery. And even then, the law will only allow you to get copies of your own records. All others are strictly confidential. The ACJIC website has forms and instructions on how to make a request for your files.