The District Court1 held, in a suit for declaratory and injunctive relief brought by owners and operators of “adult” movies and bookstores, that Minneapolis Code of Ordinances § 540.410, a zoning ordinance, violated the First and Fourteenth Amendments. Alexander v. City of Minneapolis, 531 F.Supp. 1162 (D.Minn. 1982). Section 540.410 attempted to regulate the establishment and operation of various “adults-only” enterprises including adults-only bookstores, adults-only theatres, saunas, massage parlors, and “rap parlors.”2 The Dis*937trict Court found as a fact that access to adult bookstores and movies would be significantly restricted by the ordinance. Because this finding is not clearly erroneous, we affirm.

Section 540.410 was enacted in May 1977 to insure that certain businesses do “not contribute to the blighting or downgrading of the surrounding neighborhood.” § 540.-410(a). It sets forth two primary restrictions. The first forbids an adults-only facility from operating “within five hundred (500) feet of a residentially zoned district, an office-residence zoned district, a church, a state-licensed day care facility and public educational facilities which serve persons age seventeen (17) or younger, an elementary school or a high school.” § 540.410(c). The second forbids an adults-only facility from operating within 500 feet of any other adults-only facility. § 540.410(d). The ordinance regulates the continued operation of already existing establishments as well as the location of new ones. Existing adult facilities were required to conform to the ordinance, by moving to a new location if necessary, by July 1, 1981. § 540.410(f).

There are presently five adults-only theatres in Minneapolis. Under § 540.410 all are in prohibited areas. Plaintiff Vegas Cinema owns one; the other four are owned by the plaintiff Alexander and managed by the plaintiff Jochim. There are approximately ten adult bookstores in Minneapolis. The ordinance would preclude the continued operation of at least seven and possibly nine of them. Alexander owns six of the bookstores, of which between three and five are prohibited by the ordinance.3

In Young v. American Mini Theatres, 427 U.S. 50, 96 S.Ct. 2440,49 L.Ed.2d 310 (1976), the Supreme Court upheld a Detroit zoning ordinance regulating the establishment of new adult theatres.4 Justice Stevens, writing for a plurality of four, analyzed the case in terms of whether the “statutory classification [was] unconstitutional because it [was] based on the content of communication protected by the First Amendment,” id. at 52, 96 S.Ct. at 2443, and responded in the negative. (Everyone concedes that the communication at issue here is protected by the First Amendment. The ordinance has nothing to do with obscenity as such.) By doing so he carved out a limited exception to the general prohibition against content based regulations. See Heffron v. International Society For Krishna Consciousness, Inc., 452 U.S. 640, 647-48, 101 S.Ct. 2559, 2563-64, 69 L.Ed.2d 298 (1981). The plurality recognized, however, that a similar content-based zoning ordinance would not withstand constitutional attack if it had the effect of greatly restricting access, and suggested that the result of Young would have been “quite different if the ordinance had the effect of suppressing, or greatly restricting access to, lawful speech.” Young, supra, 427 U.S. at 71 n. 35, 96 S.Ct. at 2453 *938n. 35. But because even after the ordinance was passed “myriad locations in the City of Detroit” remained where new adult theatres could open, the statute was valid. In his concurring opinion, Mr. Justice Powell viewed Young as “presenting an example of innovative land-use regulation, implicating First Amendment concerns only incidentally and to a limited extent." Id. at 73, 96 S.Ct. at 2453 (emphasis added). He looked to whether the ordinance imposed any content limitations on the creators of adult movies and whether it restricted in any significant way the public’s right to patronize these movies. He found that despite the ordinance “the number of adult movie theaters in Detroit will remain approximately the same” and suggested that he would not have upheld the ordinance if this were not the case. Young v. American Mini Theatres, supra, 427 U.S. at 79, 96 S.Ct. at 2456.

The Court had an opportunity further to explain the basis of Young in Schad v. Borough of Mount Ephraim, 452 U.S. 61, 101 S.Ct. 2176, 68 L.Ed.2d 671 (1981). There, the Court invalidated a Mt. Ephraim, New Jersey, ordinance banning nude dancing. It distinguished the Mt. Ephraim ordinance from the Detroit one, noting that the latter “did not affect the number of adult movie theatres that could operate in the city,” id. at 71, 101 S.Ct. at 2184, and quoted Justice Stevens’s observation in Young that the case would come out quite differently “ ‘if the ordinance had the effect of suppressing, or greatly restricting access to, lawful speech.’ ” Id. at 76, 101 S.Ct. at 2186 (quoting Young v. American Mini Theatres, 427 U.S. at 71 n. 35, 96 S.Ct. at 2453 n. 35).

This Court recently addressed a similar issue in Avalon Cinema Corp. v. Thompson, 667 F.2d 659 (8th Cir. 1981) (en banc). The City of North Little Rock, Arkansas, enacted an ordinance which would have prevented a newly refurbished and licensed adult theatre as well as a newly licensed adult bookstore from opening. This Court invalidated the ordinance in part because it “had the effect of virtually suppressing public access to sexually oriented (but nonobscene) adult entertainment.” Id. at 662. Those courts of appeals which have addressed this kind of issue have reached similar results. Basiardanes v. City of Galveston, 682 F.2d 1203, 1213-14 (5th Cir. 1981); Keego Harbor Co. v. City of Keego Harbor, 657 F.2d 94, 98 (6th Cir. 1981); cf. Hart Book Stores, Inc. v. Edmisten, 612 F.2d 821, 827 (4th Cir. 1979), cert. denied, 447 U.S. 929, 100 S.Ct. 3028, 65 L.Ed.2d 1124 (1980).

The defendants concede that if the ordinance significantly restricted access to sexually oriented entertainment it would be unconstitutional, but contend that it does not. This contention is squarely in conflict with the factual findings of the District Court. It found that the Minneapolis ordinance not only regulates new adult facilities but also affects those in existence at the time it was enacted. Under it all five adult theatres must relocate, and so must between seven and nine of the ten adult bookstores. These establishments will have to compete with another eighteen saunas, massage parlors, and “rap parlors” (Tr. 100, 131-32) for relocation space. The ordinance severely circumscribes the area to which adults-only facilities may relocate. There are at most twelve possible legal sites for relocation. Alexander v. City of Minneapolis, 531 F.Supp. 1162, 1171 (D.Minn. 1982). “[Ejnforcement of § 540.410 would have the effect of substantially reducing the number of adult bookstores and theatres in Minneapolis,” and “no new adult bookstores or theatres would be able to open.” Id. at 1172.

These findings are not clearly erroneous. Zoning Supervisor William Nordrum, one of the defendants in this case, conceded that if the maximum space physically permitted under the ordinance (including the 500-foot radius required around every adults-only facility) were used, there would be physical space to relocate only twelve adult facilities (Tr. 141). He testified there would be substantially fewer adult bookstores.

Q So as I understand your testimony, there are approximately 30 adult uses that presently exist within the City of Minneapolis?

*939A Yes.

Q And of those, five, as I understand, will be permitted to remain?

A Unless some receive extensions from the Minneapolis City Council, that’s correct.

Q Isn’t it true that, assuming you could find locations for as many possible in the white area [5] and draw a 500-foot radius, you probably wouldn’t be able to relocate more than a dozen within the white area?

A That sounds correct.

Q And isn’t it possible that if the ordinance were fully implemented, there would be no adult theaters at all within the City of Minneapolis?

A Unless there were extensions granted by the City Council, that’s correct.

Q And there would be substantially fewer adult bookstores in the City, is that correct?

A Yes.

(Tr. 140-41).

Theoretically the adult facilities in question could stay in their present locations if they reduced their inventory of “sexually oriented material” to below 40%. § 540.-410(b)(1), (2). Moreover, under § 540.410(g) the city council, upon the recommendation of the zoning administrator, may allow an adult facility an extension beyond the July 1, 1981, relocation deadline.6 These provisions, however, do not significantly reduce the negative impact of the ordinance on the right to purvey lawful and protected sexually oriented material and the public’s right of access to it. Mr. Nordrum testified that extensions would be granted only for the purpose of allowing proprietors to recoup their initial investments and only if the property could not be put to any other use (Tr. 79). This being the case we agree with the District Court that “[a]n administrative extension is not realistic.” Alexander v. City of Minneapolis, supra, 531 F.Supp. at 1170. In addition, there was sufficient evidence indicating that adult facilities attempting to comply with the 40% provision of §§ 540.410(b)(1) and (2) would face great practical difficulties in doing business (Tr. 206, 230, 265). Moreover, compliance with §§ 540.410(b)(1) and (2) would necessarily mean restricted access to this type of constitutionally protected material.

The District Court permissibly found that § 540.410 would greatly suppress access to adult theatres and bookstores.7 The ordinance can therefore not survive under the criteria either of the plurality opinion in Young, or of the concurrence.

The judgment is

Affirmed.